Granted Patent
Utility
US 5,807,408 · App. 08/851,668
Industrial robot safety device that shuts down operation in reponse to variation in tension of a rope
Inventor:
Carlos M. Ruiz
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: May 6, 1997
Inventor
Carlos M. Ruiz
Assignee (at issue)
Submicron Systems, 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.