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Norman B. Campbell

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  • Chino, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of removing stuck sprue and tool for removal therein
    • Patent number 5,441,399
    • Issue date Aug 15, 1995
    • Wea Manufacturing Inc.
    • Norman B. Campbell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method of removing stuck sprue
    • Patent number 5,391,332
    • Issue date Feb 21, 1995
    • Wea Manufacturing Inc.
    • Norman B. Campbell
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL