Granted Patent
Utility
US 5,310,028 · App. 07/991,055
S-cam for drum brake
Inventor:
Ernest C. Sampson
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Dec 15, 1992
Inventor
Ernest C. Sampson
Assignee (at issue)
Eaton Corporation
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.