TREA

Gerhard Graf

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  • Siegen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical printer
    • Patent number RE32099
    • Issue date Mar 25, 1986
    • U.S. Philips Corporation
    • Bernhard Hill
    • 346 - Recorders
  • Information Patent Grant

    Optical printer
    • Patent number 4,278,981
    • Issue date Jul 14, 1981
    • U.S. Philips Corporation
    • Bernhard Hill
    • G06 - COMPUTING CALCULATING COUNTING