Granted Patent
Utility
US 4,364,557 · App. 05/960,765
Work control apparatus in an exerciser
Inventor:
Ronald A. Serati
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Nov 15, 1978
Inventor
Ronald A. Serati
Assignee (at issue)
Perfection Manufacturing 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.