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Monolithic switch
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Patent number 4,663,598
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Issue date May 5, 1987
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The Grass Valley Group
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Birney D. Dayton
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H03 - BASIC ELECTRONIC CIRCUITRY
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Digital data input circuit
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Patent number 4,596,984
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Issue date Jun 24, 1986
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Mitsubishi Denki Kabushiki Kaisha
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Noritaka Egami
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H03 - BASIC ELECTRONIC CIRCUITRY
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Broad band switching network
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Patent number 4,331,950
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Issue date May 25, 1982
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Siemens Aktiengesellschaft
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Udo Barabas
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Vend control system
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Patent number 4,284,208
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Issue date Aug 18, 1981
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H. R. Electronics Company
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Joseph L. Levasseur
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G07 - CHECKING-DEVICES
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3883696
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Patent number 3,883,696
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Issue date May 13, 1975
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3882274
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Patent number 3,882,274
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Issue date May 6, 1975
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H03 - BASIC ELECTRONIC CIRCUITRY
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3789151
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Patent number 3,789,151
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Issue date Jan 29, 1974
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3761768
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Patent number 3,761,768
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Issue date Sep 25, 1973
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3749970
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Patent number 3,749,970
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Issue date Jul 31, 1973
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3740730
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Patent number 3,740,730
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Issue date Jun 19, 1973
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G11 - INFORMATION STORAGE
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3736573
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Patent number 3,736,573
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Issue date May 29, 1973
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G11 - INFORMATION STORAGE