Granted Patent
Utility
US 4,923,712 · App. 07/178,697
Asphaltic flashing stick
Inventors:
Jason Gladfelter, William J. Woodring, Louis L. Grube, Charles J. Horner, Jr.
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Apr 7, 1988
Inventors
Jason Gladfelter
William J. Woodring
Louis L. Grube
Charles J. Horner, Jr.
Assignee (at issue)
GAF Building Materials Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.