Granted Patent
Utility
US 5,295,292 · App. 07/929,330
Method of making a spacer frame assembly
Inventor:
Edmund A. Leopold
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Aug 13, 1992
Inventor
Edmund A. Leopold
Assignee (at issue)
Glass Equipment Development, 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.