TREA

Frits Johan Versteeg

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  • Rotterdam, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Catadioptric objective
    • Patent number 4,487,483
    • Issue date Dec 11, 1984
    • N.V. Optische Industria "De Oude Delft"
    • Frits J. Versteeg
    • G02 - OPTICS
  • Information Patent Grant

    Device for viewing residual light in the visible and the near infra...
    • Patent number 4,266,129
    • Issue date May 5, 1981
    • N.V. Optische Industrie "de Oude Delft"
    • Frits J. Versteeg
    • G02 - OPTICS
  • Information Patent Grant

    Magnifier
    • Patent number 4,111,528
    • Issue date Sep 5, 1978
    • N.V. Optische Industrie "de Oude Delft"
    • Frits Johan Versteeg
    • G02 - OPTICS