Granted Patent
Utility
US 4,545,160 · App. 06/478,026
Window
Inventors:
Paul Grether, Kurt Brader, Bruno Keller
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Mar 23, 1983
Inventors
Paul Grether
Kurt Brader
Bruno Keller
Assignee (at issue)
Sulzer Brothers Limited
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.