Granted Patent
Utility
US 6,415,561 · App. 09/842,464
Multi-sheet glazing unit having a single spacer frame and method of making same
Inventor:
Albert E. Thompson, Jr.
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Apr 26, 2001
Inventor
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.