Granted Patent
Utility
US 4,345,800 · App. 06/119,551
Double-row radially self-aligning roller bearing
Inventors:
Heinrich Hofmann, Gunther Markfelder, Hans-Eberhard Bender
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: Feb 7, 1980
Inventors
Heinrich Hofmann
Gunther Markfelder
Hans-Eberhard Bender
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.