Granted Patent
Utility
US 4,522,611 · App. 06/453,799
Sprocket assembly with replaceable teeth
Inventor:
David M. Hiatt
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Dec 27, 1982
Inventor
David M. Hiatt
Assignee (at issue)
ESCO GROUP LLC
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.