Granted Patent
Utility
US 5,531,047 · App. 08/102,596
Glazing unit having three or more glass sheets and having a low thermal edge, and method of making same
Inventors:
Edmund A. Leopold, Paul J. Kovacik
Patented Case
View Patent ↗
Granted: Jul 2, 1996
Filed: Aug 5, 1993
Inventors
Edmund A. Leopold
Paul J. Kovacik
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.