Granted Patent
Utility
US 4,837,622 · App. 07/209,915
High density probe card
Inventors:
Welton B. Whann, Paul M. Elizondo, II
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Jun 22, 1988
Inventors
Welton B. Whann
Paul M. Elizondo, II
Assignee (at issue)
MICROPROBE, INC.
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.