TREA

Dieter Mankau

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  • Braunschweig, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Photographic slide projector
    • Patent number D253708
    • Issue date Dec 18, 1979
    • Rollei-Werke Franke & Heidecke
    • Dieter Mankau
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Photographic slide projector
    • Patent number D250199
    • Issue date Nov 7, 1978
    • Rollei-Werke Franke & Heidecke
    • Dieter Mankau
    • D16 - Photography and optical equipment