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Fred H. Rojahn

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  • Springfield, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of making a stringer element for a slide fastener
    • Patent number 4,062,919
    • Issue date Dec 13, 1977
    • U. Zip International, S. A.
    • Fred H. Rojahn
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Slide fastener stringer
    • Patent number 4,037,295
    • Issue date Jul 26, 1977
    • Fred H. Rojahn
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL