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Vacuum exhaust method
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Patent number 10,014,145
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Issue date Jul 3, 2018
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Tokyo Electron Limited
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Tomohiro Saito
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum switch apparatus
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Patent number 5,038,082
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Issue date Aug 6, 1991
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Hitachi, Ltd.
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Hiroshi Arita
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H01 - BASIC ELECTRIC ELEMENTS
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Magnetically focussed tube
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Patent number 4,197,481
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Issue date Apr 8, 1980
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International Standard Electric Corporation
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Graham H. G. Phipps
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H01 - BASIC ELECTRIC ELEMENTS
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3826945
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Patent number 3,826,945
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Issue date Jul 30, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3787747
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Patent number 3,787,747
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Issue date Jan 22, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3766422
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Patent number 3,766,422
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Issue date Oct 16, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3660770
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Patent number 3,660,770
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Issue date May 2, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3631281
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Patent number 3,631,281
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Issue date Dec 28, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3610996
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Patent number 3,610,996
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Issue date Oct 5, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3609439
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Patent number 3,609,439
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Issue date Sep 28, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3562576
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Patent number 3,562,576
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Issue date Feb 9, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3551735
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Patent number 3,551,735
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Issue date Dec 29, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3506870
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Patent number 3,506,870
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Issue date Apr 14, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3453475
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Patent number 3,453,475
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Issue date Jul 1, 1969
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G01 - MEASURING TESTING
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3370196
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Patent number 3,370,196
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Issue date Feb 20, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3366823
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Patent number 3,366,823
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Issue date Jan 30, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3365601
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Patent number 3,365,601
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H01 - BASIC ELECTRIC ELEMENTS
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3202784
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Issue date Aug 24, 1965
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H01 - BASIC ELECTRIC ELEMENTS
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2887602
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H01 - BASIC ELECTRIC ELEMENTS
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2762944
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Patent number 2,762,944
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H01 - BASIC ELECTRIC ELEMENTS
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2749392
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Patent number 2,749,392
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2748307
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Patent number 2,748,307
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Issue date May 29, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2727987
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Patent number 2,727,987
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Issue date Dec 20, 1955
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H01 - BASIC ELECTRIC ELEMENTS