Patents by Inventor Herbert L. Lindsay

Herbert L. Lindsay 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).

  • Switching arrangements
    Patent number: 4206327
    Abstract: A switching arrangement comprises a spring-loaded clockwork movement and a switch to control a device, the movement of the spring itself, as it is tensioned or becomes substantially de-tensioned, being utilized to operate the switch.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: June 3, 1980
    Inventor: Herbert L. Lindsay