Granted Patent
Utility
US 4,986,802 · App. 07/361,427
Planetary gear box for a jack
Inventors:
John Scoville, Darryl L. Engel
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Jun 5, 1989
Inventors
John Scoville
Darryl L. Engel
Assignee (at issue)
Universal Tool & Stamping Co., Inc.
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.