Granted Patent
Utility
US 6,477,812 · App. 09/990,727
Multi-sheet glazing unit and method of making same
Inventors:
Bradley P. Boone, Stephen L. Crandell, Jack B. McCandless, David E. Singleton, Albert E. Thompson, Jr.
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Nov 21, 2001
Inventors
Bradley P. Boone
Stephen L. Crandell
Jack B. McCandless
David E. Singleton
Albert E. Thompson, Jr.
Assignee (at issue)
PPG Industries Ohio, 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.