Patents by Inventor Calvin H. Battrick

Calvin H. Battrick 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).

  • Universal spud wrench
    Patent number: 4237754
    Abstract: A universal spud wrench designed for rapid installation and removal of all types of spuds from drains, etc., including a tubular shaft having four perpendicularly oriented sloped surfaces forming slots, and aligned extensions adjacent said slots which are defined by differing diameters about a central axis.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: December 9, 1980
    Assignee: Raymond Troutt
    Inventor: Calvin H. Battrick