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                        Rod guide remover
                                - 
                                    Patent number 5,123,829
                                
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                                    Issue date Jun 23, 1992
                                
 
                                - 
                                         J.M. Huber Corporation J.M. Huber Corporation
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                                         Ronald D. Eason Ronald D. Eason
 
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                                         B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
 
 
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                        Pipe protector installation device
                                - 
                                    Patent number 4,726,102
                                
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                                    Issue date Feb 23, 1988
                                
 
                                - 
                                         Hydril Company Hydril Company
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                                         David M. Schrader David M. Schrader
 
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                                         B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
 
 
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                        3887985
                                - 
                                    Patent number 3,887,985
                                
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                                    Issue date Jun 10, 1975
                                
 
                                - 
                                         B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
 
 
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                        3750261
                                - 
                                    Patent number 3,750,261
                                
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                                    Issue date Aug 7, 1973
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        3538587
                                - 
                                    Patent number 3,538,587
                                
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                                    Issue date Nov 10, 1970
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        3353252
                                - 
                                    Patent number 3,353,252
                                
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                                    Issue date Nov 21, 1967
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        3186079
                                - 
                                    Patent number 3,186,079
                                
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                                    Issue date Jun 1, 1965
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        3126624
                                - 
                                    Patent number 3,126,624
                                
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                                    Issue date Mar 31, 1964
                                
 
                                - 
                                         B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
 
 
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                        3099877
                                - 
                                    Patent number 3,099,877
                                
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                                    Issue date Aug 6, 1963
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2957233
                                - 
                                    Patent number 2,957,233
                                
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                                    Issue date Oct 25, 1960
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2954603
                                - 
                                    Patent number 2,954,603
                                
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                                    Issue date Oct 4, 1960
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2941283
                                - 
                                    Patent number 2,941,283
                                
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                                    Issue date Jun 21, 1960
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2901310
                                - 
                                    Patent number 2,901,310
                                
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                                    Issue date Aug 25, 1959
                                
 
                                - 
                                         A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
 
 
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                        2880499
                                - 
                                    Patent number 2,880,499
                                
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                                    Issue date Apr 7, 1959
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2878558
                                - 
                                    Patent number 2,878,558
                                
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                                    Issue date Mar 24, 1959
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2828535
                                - 
                                    Patent number 2,828,535
                                
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                                    Issue date Apr 1, 1958
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2776469
                                - 
                                    Patent number 2,776,469
                                
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                                    Issue date Jan 8, 1957
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2725621
                                - 
                                    Patent number 2,725,621
                                
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                                    Issue date Dec 6, 1955
                                
 
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                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2694853
                                - 
                                    Patent number 2,694,853
                                
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                                    Issue date Nov 23, 1954
                                
 
                                - 
                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2693633
                                - 
                                    Patent number 2,693,633
                                
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                                    Issue date Nov 9, 1954
                                
 
                                - 
                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2687566
                                - 
                                    Patent number 2,687,566
                                
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                                    Issue date Aug 31, 1954
                                
 
                                - 
                                         B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
 
 
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                        2686358
                                - 
                                    Patent number 2,686,358
                                
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                                    Issue date Aug 17, 1954
                                
 
                                - 
                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2682102
                                - 
                                    Patent number 2,682,102
                                
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                                    Issue date Jun 29, 1954
                                
 
                                - 
                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2677880
                                - 
                                    Patent number 2,677,880
                                
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                                    Issue date May 11, 1954
                                
 
                                - 
                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING
 
 
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                        2674034
                                - 
                                    Patent number 2,674,034
                                
- 
                                    Issue date Apr 6, 1954
                                
 
                                - 
                                         E21 - EARTH DRILLING MINING E21 - EARTH DRILLING MINING