John J. Sigman Jr.

Person

  • Algonac, MI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Plunge shaving machine

    • Patent number 4,173,920
    • Issue date Nov 13, 1979
    • Lear Siegler, Inc.
    • John J. Sigman
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR