Granted Patent
Utility
US 5,537,899 · App. 08/409,036
Dual-pawl ratcheting mechanism with provision for preventing pawl jamming
Inventor:
Thomas J. Diedrich
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Mar 27, 1995
Inventor
Thomas J. Diedrich
Assignee (at issue)
Snap-On Technologies, 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.