Granted Patent
Utility
US 5,553,440 · App. 08/326,565
Multi-sheet glazing unit and method of making same
Inventors:
Mark L. Bulger, Albert E. Thompson, Jr.
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: Oct 20, 1994
Inventors
Mark L. Bulger
Albert E. Thompson, Jr.
Assignee (at issue)
PPG Industries, 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.