Granted Patent
Utility
US 6,289,641 · App. 09/016,535
Glazing unit having three or more spaced sheets and a single spacer frame and method of making same
Inventor:
Jack B. McCandless
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Jan 30, 1998
Inventor
Jack B. McCandless
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.