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Electric circuit breaker
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Patent number 4,247,746
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Issue date Jan 27, 1981
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Dorman Smith Switchgear Limited
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Alan L. Kidd
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H01 - BASIC ELECTRIC ELEMENTS
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Electrical circuit breakers
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Patent number 4,023,132
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Issue date May 10, 1977
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Dorman Smith Switchgear Limited
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Alan Lister Kidd
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H01 - BASIC ELECTRIC ELEMENTS
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Electrical circuit breaker
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Patent number 3,944,959
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Issue date Mar 16, 1976
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Dorman Smith Switchgear Limited
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Alan Lister Kidd
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H01 - BASIC ELECTRIC ELEMENTS
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Electrical circuit breakers
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Patent number 3,943,477
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Issue date Mar 9, 1976
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Dorman Smith Switchgear Limited
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Alan Lister Kidd
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H01 - BASIC ELECTRIC ELEMENTS