Granted Patent
Utility
US 4,378,659 · App. 05/925,300
Windows
Inventors:
Stephen L. Hosmer, Paul Steuer
Patented Case
View Patent ↗
Granted: Apr 5, 1983
Filed: Jul 17, 1978
Inventors
Stephen L. Hosmer
Paul Steuer
Assignee (at issue)
Caterpillar Tractor Co.
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.