Granted Patent
Utility
US 4,235,121 · App. 05/955,106
Chain speed reducer assembly
Inventor:
Greg Cook
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Oct 26, 1978
Inventor
Greg Cook
Assignee (at issue)
Cook Machine 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.