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Marshall Johnson

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  • Mundelein, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number 4,145,978
    • Issue date Mar 27, 1979
    • The Eastern Company
    • Marshall A. Johnson
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

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    • Patent number 3,966,247
    • Issue date Jun 29, 1976
    • Madge Canter Associates, Inc.
    • Fred Muller
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS