TREA

Harry D. Crandon

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  • Woodstock, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Abrasion-resistant optical element
    • Patent number 4,120,992
    • Issue date Oct 17, 1978
    • American Optical Corporation
    • Bernard L. Laurin
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Abrasion-resistant optical element
    • Patent number 4,049,868
    • Issue date Sep 20, 1977
    • American Optical Corporation
    • Bernard L. Laurin
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL