Granted Patent
Utility
US 5,187,432 · App. 07/784,206
Environmental stress screening process
Inventors:
Wolfgang J. Bauernfeind, Frank T. Beard, Edwin Zane Brown, Craig E. McMurray, Joseph E. Pigg
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Oct 28, 1991
Inventors
Wolfgang J. Bauernfeind
Frank T. Beard
Edwin Zane Brown
Craig E. McMurray
Joseph E. Pigg
Assignee (at issue)
AT&T Bell Laboratories
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.