Granted Patent
Utility
US 4,802,653 · App. 07/121,165
Scissors jack
Inventor:
Darryl L. Engel
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Nov 16, 1987
Inventor
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.