Granted Patent
Utility
US 4,743,001 · App. 07/061,590
Hydraulic work support with locking plunger
Inventor:
Roger L. Craft
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Jun 15, 1987
Inventor
Roger L. Craft
Assignee (at issue)
VEKTEK, 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.