Patents by Inventor Bertoldo Piero

Bertoldo Piero has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coupling for metal tubes
    Patent number: 5792990
    Abstract: A coupling includes a metal body having a cavity for receiving the end of a tube. The coupling has an electrically conductive, resilient member which is in electrical contact with the metal body and one part of which is intended to exert a resilient force on the outer surface of the tube so as to establish electrical contact with the tube.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: August 11, 1998
    Assignee: Bertoldo & C. S.r.l.
    Inventor: Bertoldo Piero