characterised by multi-step processes

Patents Grantslast 30 patents

  • Information Patent Grant

    Groove engraving device and groove engraving method

    • Patent number 11,745,535
    • Issue date Sep 5, 2023
    • LONGI GREEN ENERGY TECHNOLOGY CO., LTD.
    • Jianbo Mao
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    3860050

    • Patent number 3,860,050
    • Issue date Jan 14, 1975
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    3625092

    • Patent number 3,625,092
    • Issue date Dec 7, 1971
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    3552002

    • Patent number 3,552,002
    • Issue date Jan 5, 1971
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    3179013

    • Patent number 3,179,013
    • Issue date Apr 20, 1965
    • B44 - DECORATIVE ARTS

Patents Applicationslast 30 patents