Patents by Inventor Richard W. Steiner

Richard W. Steiner 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).

  • Patent number: 4878156
    Abstract: A replaceable focusing handle for the focusing shaft of a lighthead includes internal surfaces which register with reaction and locking surfaces of a drive post. A shield carried by the handle prevents inadvertent detachment of the handle.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: October 31, 1989
    Assignee: MDT Corporation
    Inventors: Leonard L. Hallings, Richard W. Steiner