using a solid fuel

Patents Grantslast 30 patents

  • Information Patent Grant

    1763900

    • Patent number 1,763,900
    • Issue date Jun 17, 1930
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    1571903

    • Patent number 1,571,903
    • Issue date Feb 2, 1926
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR