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Variable resistance device
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Patent number 3,932,831
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Issue date Jan 13, 1976
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Spectrol Electronics Corporation
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Ronald A. Shirley
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H01 - BASIC ELECTRIC ELEMENTS
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3906428
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Patent number 3,906,428
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Issue date Sep 16, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3887891
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Patent number 3,887,891
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Issue date Jun 3, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3820052
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Patent number 3,820,052
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Issue date Jun 25, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3757732
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Patent number 3,757,732
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Issue date Sep 11, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3737634
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Patent number 3,737,634
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Issue date Jun 5, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3733695
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Patent number 3,733,695
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Issue date May 22, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3723937
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Patent number 3,723,937
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Issue date Mar 27, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3697920
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Patent number 3,697,920
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Issue date Oct 10, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3648217
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Patent number 3,648,217
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Issue date Mar 7, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3629777
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Patent number 3,629,777
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Issue date Dec 21, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3564475
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Patent number 3,564,475
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Issue date Feb 16, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3562693
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Patent number 3,562,693
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Issue date Feb 9, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3537055
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Patent number 3,537,055
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Issue date Oct 27, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3535670
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Patent number 3,535,670
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Issue date Oct 20, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3508329
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Patent number 3,508,329
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Issue date Apr 28, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3497855
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Patent number 3,497,855
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Issue date Feb 24, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3477056
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Patent number 3,477,056
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Issue date Nov 4, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3448426
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Patent number 3,448,426
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Issue date Jun 3, 1969
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3436714
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Patent number 3,436,714
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Issue date Apr 1, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3431531
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Patent number 3,431,531
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Issue date Mar 4, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3426307
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Patent number 3,426,307
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Issue date Feb 4, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3404361
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Patent number 3,404,361
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Issue date Oct 1, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3399368
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Patent number 3,399,368
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Issue date Aug 27, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3394336
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Patent number 3,394,336
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Issue date Jul 23, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3388364
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Patent number 3,388,364
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Issue date Jun 11, 1968
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H01 - BASIC ELECTRIC ELEMENTS