Granted Patent
Utility
US 4,387,542 · App. 06/140,454
Integrated window and wall system
Inventor:
David Wehr
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Apr 17, 1980
Inventor
David Wehr
Assignee (at issue)
Cyclops Corporation
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.