Granted Patent
Utility
US 4,334,720 · App. 06/120,448
Split-inner-ring ball bearing with lubrication structure
Inventor:
Hans Signer
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Feb 11, 1980
Inventor
Hans Signer
Assignee (at issue)
Industrial Tectonics, 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.