Granted Patent
Utility
US 4,596,440 · App. 06/586,797
Electrical probe contact
Inventor:
Grant S. Quam
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Mar 6, 1984
Inventor
Grant S. Quam
Assignee (at issue)
E.F. Johnson Company
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.