Patents by Inventor David A. Blubaugh

David A. Blubaugh 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).

  • Gridwall
    Patent number: 6269595
    Abstract: A wallboard or drywall system with two types of measuring indicia on on side of the wallboard or drywall, and an integral, transparent vapor barrier is applied to the back side of the wallboard or drywall. In addition, the system contains adhesive coated plastic tape which can be used to seal adjacent, mating edges of wallboard or drywall panels.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: August 7, 2001
    Inventors: David A. Blubaugh, Elmo A. Blubaugh