TREA

Hellman, Sr.; Robert R.

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  • Oxford, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid flow valve
    • Patent number 5,445,361
    • Issue date Aug 29, 1995
    • Hellman, Sr.; Robert R.
    • Robert R. Hellman
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method for forming thin-wall tubing
    • Patent number 5,425,261
    • Issue date Jun 20, 1995
    • Hellman, Sr.; Robert R.
    • Robert R. Hellman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

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