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Vacuum valve
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Patent number 8,497,445
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Issue date Jul 30, 2013
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Fuji Electric FA Components & Systems Co., Ltd.
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Shoji Yoshida
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum chamber
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Patent number 6,308,857
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Issue date Oct 30, 2001
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ABB Patent GmbH
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Markus Heimbach
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum interrupter
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Patent number 5,847,347
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Issue date Dec 8, 1998
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Siemens Aktiengesellschaft
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Wolfgang Schwarze
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum circuit interrupter
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Patent number 5,594,224
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Issue date Jan 14, 1997
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Hitachi, Ltd.
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Toru Tanimizu
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum switch
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Patent number 5,510,592
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Issue date Apr 23, 1996
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ABB Patent GmbH
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Dietmar Gentsch
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum interrupter
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Patent number 4,933,518
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Issue date Jun 12, 1990
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Square D Company
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Simon Yin
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H01 - BASIC ELECTRIC ELEMENTS
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Air-tight ceramic container
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Patent number 4,917,642
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Issue date Apr 17, 1990
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Kabushiki Kaisha Toshiba
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Masako Nakahashi
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Vacuum discharge device
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Patent number 4,896,008
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Issue date Jan 23, 1990
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Mitsubishi Denki Kabushiki Kaisha
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Shinichi Aoki
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H01 - BASIC ELECTRIC ELEMENTS
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