Granted Patent
Utility
US 5,702,187 · App. 08/789,305
Guide ring for roller bearing
Inventors:
Michael Weigand, Werner Ganss, Martin Grehn
Patented Case
View Patent ↗
Granted: Dec 30, 1997
Filed: Jan 23, 1997
Inventors
Michael Weigand
Werner Ganss
Martin Grehn
Assignee (at issue)
Fag Oem und Handel 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.