Granted Patent
Utility
US 6,439,341 · App. 09/783,488
Apparatus for monitoring loading of a lift
Inventors:
David P. Engvall, Stanley Sumsion
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Feb 14, 2001
Inventors
David P. Engvall
Stanley Sumsion
Assignee (at issue)
Snorkel 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.