Granted Patent
Utility
US 4,376,541 · App. 06/324,541
Axially and radially effective bearing seal
Inventors:
Wilhelm Walter, Peter Dreschmann
Patented Case
View Patent ↗
Granted: Mar 15, 1983
Filed: Nov 24, 1981
Inventors
Wilhelm Walter
Peter Dreschmann
Assignee (at issue)
Fag Kugelfischer Georg Shäfer AG
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.