Patents by Inventor Robert E. Hardcastle

Robert E. Hardcastle 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).

  • Connector
    Patent number: 4871322
    Abstract: An electrical connector for linking a clip to a base plug, the connector having a threaded portion for securing itself to the base plug, and also having a laterally positioned, flattened segment to be grasped by the clip.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: October 3, 1989
    Inventor: Robert E. Hardcastle