Granted Patent
Utility
US 4,897,601 · App. 07/162,786
Test fixture for integrated circuit chips
Inventors:
Vincent Hirsch, Edward D. Freymiller, Edward Johnson
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Mar 2, 1988
Inventors
Vincent Hirsch
Edward D. Freymiller
Edward Johnson
Assignee (at issue)
BALL CORPORATION
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.