Granted Patent
Utility
US 4,977,641 · App. 07/524,715
Lever handle assembly for sanitary fixtures
Inventor:
Rudolf Steffes
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: May 17, 1990
Inventor
Rudolf Steffes
Assignee (at issue)
American Standard 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.