Granted Patent
Utility
US 5,190,122 · App. 07/758,118
Safety interlock system
Inventors:
Robert H. Fletcher, James H. Myers
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Sep 12, 1991
Inventors
Robert H. Fletcher
James H. Myers
Assignee (at issue)
Andvantage Lift 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.