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Industry

  • CPC
  • B21K11/04
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Current Industry

Patents Grantslast 30 patents

  • Information Patent Grant

    2159329

    • Patent number 2,159,329
    • Issue date May 23, 1939
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1638902

    • Patent number 1,638,902
    • Issue date Aug 16, 1927
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1371469

    • Patent number 1,371,469
    • Issue date Mar 15, 1921
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1091415

    • Patent number 1,091,415
    • Issue date Mar 24, 1914
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...