Granted Patent
Utility
US 5,369,929 · App. 08/189,796
Laminated roofing shingle
Inventors:
Casimir Paul Weaver, Matti Kiik, William J. Schultz, Patrick T. Stapleton
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Feb 1, 1994
Inventors
Casimir Paul Weaver
Matti Kiik
William J. Schultz
Patrick T. Stapleton
Assignee (at issue)
Elk Corporation of Dallas
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.