Granted Patent
Utility
US 4,790,213 · App. 06/563,417
Planetary gear assemblies
Inventor:
Jean J. Lasoen
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Oct 28, 1983
Inventor
Jean J. Lasoen
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.