Patents by Inventor William C. Walden

William C. Walden 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).

  • Chain gauge
    Patent number: 4365420
    Abstract: Apparatus is disclosed for measuring characteristics of chains, preferably of the type utilized on chain saws, having a semicircular holder affixed at the end of an elongated scale and a semicircular shoe slidable along the scale, the scale having graduations indicative of the number of chain links and the apparatus having sight holes for measuring chain link pitch and gauge.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: December 28, 1982
    Inventor: William C. Walden