Granted Patent
Utility
US 5,104,241 · App. 07/681,283
Polymer bearing cage with amorphous case
Inventors:
Keith L. Seifert, Robert Furst
Patented Case
View Patent ↗
Granted: Apr 14, 1992
Filed: Apr 8, 1991
Inventors
Keith L. Seifert
Robert Furst
Assignee (at issue)
The Torrington Company
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.