Granted Patent
Utility
US 4,887,448 · App. 07/209,554
Knockout pin apparatus
Inventors:
J. Peter E. Kooi, James W. Myers
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Jun 21, 1988
Inventors
J. Peter E. Kooi
James W. Myers
Assignee (at issue)
Teledyne Industries, 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.