Patents by Inventor Rollin K. Corwin

Rollin K. Corwin 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).

  • Apparatus and method for indicating the rotational speed of a fan
    Patent number: 4675663
    Abstract: An apparatus and method for indicating the rotational speed of a fan is disclosed. An electrical circuit is provided for selectively providing electrical power to a plurality of indicator lights mounted on the fan. The indicator lights are turned on and off in a coded sequence that indicates the speed at which the fan is rotating.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: June 23, 1987
    Assignee: Codep International, Inc.
    Inventor: Rollin K. Corwin