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Method for cleaning pipe
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Patent number 5,244,505
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Issue date Sep 14, 1993
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Pipe Rehab International, Inc.
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Arlie Allison
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B08 - CLEANING
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Corporate stop assembly
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Patent number 5,199,145
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Issue date Apr 6, 1993
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Pipe Rehab International, Inc.
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Jim S. McMillan
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Reinforced flanges on plastic pipe
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Patent number 5,171,041
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Issue date Dec 15, 1992
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Dowell Schlumberger Incorporated
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James S. McMillan
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Apparatus for cleaning pipe
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Patent number 5,090,079
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Issue date Feb 25, 1992
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Dowell Schlumberger Incorporated
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Arlie Allison
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B08 - CLEANING
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Vacuum system
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Patent number 4,340,340
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Issue date Jul 20, 1982
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Plastic Machinery Corporation
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Glenn R. Brown
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL