Patents by Inventor Robert D. Herkimer

Robert D. Herkimer 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).

  • Patent number: 4813149
    Abstract: A level device has an extendable body portion with a pair of pivotally mounted extendable swingers. The swingers may be adjusted to swing freely, or be locked at any desired angular position. A protractor scale on the pivot mount of each swinger provides an indication of the angle of the swinger with respect to the main body portion. A spirit level is also provided on the pivot mount of each of the swingers to allow the body portion to be held in a horizontal level position. The device is useful for hanging pictures on walls, locating shelves, drawing designs on walls and measuring operations.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: March 21, 1989
    Inventor: Robert D. Herkimer