Granted Patent
Utility
US 4,797,642 · App. 07/140,177
Zero-setback sliding load for network analyzer calibration
Inventor:
Robert Rennard
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Dec 31, 1987
Inventor
Robert Rennard
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.