Granted Patent
Utility
US 6,193,213 · App. 09/264,376
Variable pressure loading system utilizing combined spring and fluid pressure
Inventors:
Stanley D. Stearns, Ales Plistil
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Mar 5, 1999
Inventors
Stanley D. Stearns
Ales Plistil
Assignee (at issue)
Valco Instruments Company, 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.