Patents by Inventor Van-De R. Campbell

Van-De R. Campbell 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).

  • Roll roofing tin cap strip
    Patent number: 5858497
    Abstract: A device for use as a part of the securing process of roofing felt (tar paper, roll roofing, etc.) comprising a ribbon like strip (FIG. 1) on which tin caps like devices (2) are evenly spaced, a lateral center line (1) and several registration lines (4). The use of this device will insure the even spacing of tin caps on a straight line.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: January 12, 1999
    Inventor: Van-De R. Campbell
  • Tree trunk protector
    Patent number: 5048229
    Abstract: A device for surrounding the trunk of trees comprising of two or more vertical pieces joined together by locking apparatus. Devices vary in size to accommodate different size trees. Once the device is installed, it serves to safeguard the lower trunk of trees from bumps and cuts.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: September 17, 1991
    Inventor: Van-De R. Campbell