Granted Patent
Utility
US 4,787,907 · App. 07/010,473
Morse taper
Inventor:
Roger G. Carignan
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Feb 3, 1987
Inventor
Roger G. Carignan
Assignee (at issue)
Techmedica, 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.