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                        Switchgear or control gear
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                                    Patent number 11,139,642
                                
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                                    Issue date Oct 5, 2021
                                
 
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                                         ABB Schweiz AG ABB Schweiz AG
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                                         Tomas  Kozel Tomas  Kozel
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        3590188
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                                    Patent number 3,590,188
                                
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                                    Issue date Jun 29, 1971
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        3242276
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                                    Patent number 3,242,276
                                
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                                    Issue date Mar 22, 1966
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        2916590
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                                    Patent number 2,916,590
                                
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                                    Issue date Dec 8, 1959
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        2842643
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                                    Patent number 2,842,643
                                
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                                    Issue date Jul 8, 1958
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        2814002
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                                    Patent number 2,814,002
                                
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                                    Issue date Nov 19, 1957
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        2778895
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                                    Patent number 2,778,895
                                
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                                    Issue date Jan 22, 1957
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        2540814
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                                    Patent number 2,540,814
                                
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                                    Issue date Feb 6, 1951
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        2476071
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                                    Patent number 2,476,071
                                
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                                    Issue date Jul 12, 1949
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        1794267
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                                    Patent number 1,794,267
                                
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                                    Issue date Feb 24, 1931
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        1659515
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                                    Patent number 1,659,515
                                
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                                    Issue date Feb 14, 1928
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
 
 
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                        1624361
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                                    Patent number 1,624,361
                                
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                                    Issue date Apr 12, 1927
                                
 
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                                         H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER