Granted Patent
Utility
US 6,808,157 · App. 10/600,068
Hollow piston restrictor
Inventors:
Dennis Mudge, Russell P. Leonard, Kimi A. Baranowski, Robert F. Ferrando, Kazimierz Janowski, Walter Luciuk
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Jun 20, 2003
Inventors
Dennis Mudge
Russell P. Leonard
Kimi A. Baranowski
Robert F. Ferrando
Kazimierz Janowski
Walter Luciuk
Assignee (at issue)
Parker-Hannifin Corporation
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.