Granted Patent
Utility
US 4,574,236 · App. 06/546,221
High frequency test fixture
Inventor:
Charles D. Hechtman
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Oct 27, 1983
Inventor
Charles D. Hechtman
Assignee (at issue)
AT&T Technologies Incorporated
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.