Granted Patent
Utility
US 4,483,197 · App. 06/430,535
Soil stress test apparatus
Inventor:
Jordan D. Kellner
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Sep 30, 1982
Inventor
Jordan D. Kellner
Assignee (at issue)
The Kendall Company LP
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.