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3433686
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Patent number 3,433,686
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Issue date Mar 18, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3425879
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Patent number 3,425,879
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Issue date Feb 4, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3403439
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Patent number 3,403,439
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Issue date Oct 1, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3401449
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Patent number 3,401,449
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Issue date Sep 17, 1968
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C30 - CRYSTAL GROWTH
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3381185
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Patent number 3,381,185
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Issue date Apr 30, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3375417
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Patent number 3,375,417
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Issue date Mar 26, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3372069
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Patent number 3,372,069
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Issue date Mar 5, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3322581
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Patent number 3,322,581
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Issue date May 30, 1967
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H01 - BASIC ELECTRIC ELEMENTS