Granted Patent
Utility
US 4,878,294 · App. 07/208,907
Electroformed chemically milled probes for chip testing
Inventors:
William P. Dugan, Marvin R. Johnson
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Jun 20, 1988
Inventors
William P. Dugan
Marvin R. Johnson
Assignee (at issue)
General Dynamics Corp., Pomona Division
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.