Granted Patent
Utility
US 5,802,639 · App. 08/741,386
Variable force clutch for linear actuator
Inventors:
Jason J. Raasch, Andrey Frolov
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Oct 29, 1996
Inventors
Jason J. Raasch
Andrey Frolov
Assignee (at issue)
Midwest Air 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.