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Thomas J. Spera

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  • Raleigh, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hole-saw
    • Patent number 9,682,431
    • Issue date Jun 20, 2017
    • Thomas J. Spera
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    DOUBLE BLADE HOLE-SAW CUP AND PILOT BIT
    • Publication number 20180333789
    • Publication date Nov 22, 2018
    • Thomas J. Spera
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    HOLE-SAW
    • Publication number 20170252834
    • Publication date Sep 7, 2017
    • Thomas J. Spera
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Hole-Saw
    • Publication number 20150352645
    • Publication date Dec 10, 2015
    • Thomas J. Spera
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR