Coupling circuits between two tubes, not otherwise provided for

Patents Grantslast 30 patents

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    3243740

    • Patent number 3,243,740
    • Issue date Mar 29, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
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    3103554

    • Patent number 3,103,554
    • Issue date Sep 10, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
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    2912656

    • Patent number 2,912,656
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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2710944

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    2685619

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    2681391

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    2676215

    • Patent number 2,676,215
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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2662938

    • Patent number 2,662,938
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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2649508

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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2629785

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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2543797

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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2539926

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    2535076

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    2532263

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    2524821

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    • Issue date Oct 10, 1950
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    2499443

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    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2491681

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    2491326

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    2451893

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    2404270

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    2398691

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    2383710

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    2368474

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    2301324

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    2280695

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    2227038

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    • Issue date Dec 31, 1940
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    2161593

    • Patent number 2,161,593
    • Issue date Jun 6, 1939
    • H03 - BASIC ELECTRONIC CIRCUITRY
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    2149328

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    • Issue date Mar 7, 1939
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    2092881

    • Patent number 2,092,881
    • Issue date Sep 14, 1937
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    2085444

    • Patent number 2,085,444
    • Issue date Jun 29, 1937
    • H03 - BASIC ELECTRONIC CIRCUITRY