Patents by Inventor Raymond L. Diehl

Raymond L. Diehl 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).

  • Oil filler funnel cap
    Patent number: 5316059
    Abstract: An improvement in an oil filler funnel cap that replaces the normal oil filler cap on internal combustion engines. The improved filler funnel cap is adjustable to fit a variety of different size oil filler openings forming an enlarged funnel receptacle with a resilient sealing closure.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: May 31, 1994
    Assignee: Springfield Investments, Inc.
    Inventors: Robert A. Lahnan, Raymond L. Diehl