Granted Patent
Utility
US 4,426,683 · App. 06/317,188
Pneumatic shock testing machine with digital control
Inventor:
Robert R. Kissell
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Nov 2, 1981
Inventor
Robert R. Kissell
Assignee (at issue)
AVCO Corporation
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.