Granted Patent
Utility
US 4,845,834 · App. 07/158,672
Tool clamping mechanism
Inventor:
Robert C. Watson
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Feb 22, 1988
Inventor
Robert C. Watson
Assignee (at issue)
Kearney & Trecker 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.