for making +-shaped pieces

Patents Grantslast 30 patents

  • Information Patent Grant

    Pipe connector for framework fabrication

    • Patent number 5,421,666
    • Issue date Jun 6, 1995
    • Donald L. Spears
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Tongue and groove snap-fit pipe coupling

    • Patent number 5,007,666
    • Issue date Apr 16, 1991
    • C & L Development Inc.
    • Vincent Kyfes
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents