Granted Patent
Utility
US 4,937,992 · App. 07/369,639
Scored panel
Inventors:
John L. Dawson, David L. Bridges
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jun 21, 1989
Inventors
John L. Dawson
David L. Bridges
Assignee (at issue)
Commercial and Architectural Products, Inc.
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.