Patents by Inventor John C. De Bonis

John C. De Bonis 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).

  • Porsche automobile oil drain replacement tube
    Patent number: 4066281
    Abstract: A replacement oil drain tube for interconnecting the head and crankcase on a Porsche automobile engine permits the repair of such engines through a replacement of standard, single piece oil drain tubes with a telescoping oil drain tube assembly, eliminating the requirement that the cylinder head be removed from the engine for such repair.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: January 3, 1978
    Inventor: John C. De Bonis