Granted Patent
Utility
US 4,813,341 · App. 07/020,073
Pneumatic cylinder and means for powering a second pneumatic unit
Inventor:
Jerry E. Vaughn
Patented Case
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Granted: Mar 21, 1989
Filed: Feb 27, 1987
Inventor
Jerry E. Vaughn
Assignee (at issue)
Tolomatic, 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.