TREA

Claus Prochnow

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  • Braunschweig, DT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Adjustment device for photographic enlarging or reproducing apparatus
    • Patent number 4,097,144
    • Issue date Jun 27, 1978
    • Rollei-Werke Franke & Heidecke
    • Claus Prochnow
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera grip
    • Patent number 4,097,883
    • Issue date Jun 27, 1978
    • Rollei-Werke Franke & Heidecke
    • Gunter Adamski
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Motion picture projector
    • Patent number 4,093,363
    • Issue date Jun 6, 1978
    • Rollei-Werke Franke & Heidecke
    • Claus Prochnow
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photographic enlarger
    • Patent number D247908
    • Issue date May 16, 1978
    • Rollei-Werke Franke & Heidecke
    • Claus Prochnow
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Electronic flash unit
    • Patent number D246589
    • Issue date Dec 6, 1977
    • Rollei-Werke Franke & Heidecke
    • Wilfried Holtje
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Flash apparatus with cable storage space
    • Patent number 4,019,041
    • Issue date Apr 19, 1977
    • Rollei-Werke Franke & Heidecke
    • Claus Prochnow
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electronic flash unit
    • Patent number D243082
    • Issue date Jan 18, 1977
    • Rollei-Werke Franke & Heidecke
    • Jochen Kramer
    • D16 - Photography and optical equipment