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Micro-electromechanical relays
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Patent number 6,094,116
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Issue date Jul 25, 2000
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California Institute of Technology
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Yu-Chong Tai
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H01 - BASIC ELECTRIC ELEMENTS
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Substation with surge arresters
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Patent number 5,712,756
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Issue date Jan 27, 1998
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Hitachi, Ltd.
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Jun Ozawa
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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High voltage disconnect/reconnect switching device
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Patent number 4,628,396
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Issue date Dec 9, 1986
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The United States of America as represented by the Secretary of the Air Force
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D. Frank E. Flemming
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Power switch apparatus
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Patent number 4,502,132
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Issue date Feb 26, 1985
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Mitsubishi Denki Kabushiki Kaisha
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Akira Nishikawa
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H01 - BASIC ELECTRIC ELEMENTS
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3733516
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Patent number 3,733,516
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Issue date May 15, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3334271
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Patent number 3,334,271
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Issue date Aug 1, 1967
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H01 - BASIC ELECTRIC ELEMENTS
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2170337
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Patent number 2,170,337
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Issue date Aug 22, 1939
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H01 - BASIC ELECTRIC ELEMENTS