Patents by Inventor Charles F. Willms

Charles F. Willms 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).

  • Fire protection system
    Patent number: 4082148
    Abstract: A fire protection system for several zones of protection utilizes an expensive extinguishing agent and directs the extinguishing agent only to a zone in which a sensing device indicates the presence of a fire thus enabling the supply of the extinguishing agent to be delivered only to the fire zone and avoiding the necessity of charging the remainder of the system.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: April 4, 1978
    Assignee: A-T-O Inc.
    Inventor: Charles F. Willms