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Richard D. Thomas

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  • Chicago, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Key case
    • Patent number 4,422,316
    • Issue date Dec 27, 1983
    • Richard D. Thomas
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Key construction
    • Patent number 4,312,200
    • Issue date Jan 26, 1982
    • Richard D. Thomas
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Element and method for teaching with liquid crystals
    • Patent number 4,038,761
    • Issue date Aug 2, 1977
    • A. B. Dick Company
    • Richard E. Thomas
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents