Patents by Inventor Martin Hirschhorn

Martin Hirschhorn 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).

  • Watch face
    Patent number: D304429
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: November 7, 1989
    Assignee: Time in Motion, Inc.
    Inventor: Martin Hirschhorn
  • Watch face
    Patent number: D333437
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: February 23, 1993
    Assignee: Time In Motion, Inc.
    Inventor: Martin Hirschhorn