Granted Patent
Utility
US 5,288,556 · App. 07/765,447
Gears and gear assemblies
Inventor:
Jerome H. Lemelson
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Sep 25, 1991
Inventor
Jerome H. Lemelson
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.