TREA

Charles R. Johnson

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  • Howell, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    High speed spindle and draw bar assembly
    • Patent number 4,148,246
    • Issue date Apr 10, 1979
    • Ex-Cell-O Corporation
    • Charles R. Johnson
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    High speed spindle and draw bar assembly
    • Patent number 4,131,054
    • Issue date Dec 26, 1978
    • Ex-Cell-O Corporation
    • Charles R. Johnson
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Self-locking chuck
    • Patent number 4,122,755
    • Issue date Oct 31, 1978
    • Ex-Cell-O Corporation
    • Charles R. Johnson
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR