Granted Patent
Utility
US 5,447,302 · App. 08/276,212
Differential gripper mechanism
Inventor:
Richard Daniel Curley
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Jul 15, 1994
Inventor
Richard Daniel Curley
Assignee (at issue)
AM International, 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.