Patents by Inventor Patrick L. Richardson

Patrick L. Richardson 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).

  • Annunciator
    Patent number: 4498077
    Abstract: An indicator is provided for each of a number of preselected conditions and is actuated in response to the occurrence of the corresponding condition. The indicator remains actuated until manually reset even if the triggering condition no longer exists.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: February 5, 1985
    Assignee: Carrier Corporation
    Inventor: Patrick L. Richardson