Granted Patent
Utility
US 6,029,692 · App. 09/243,057
Position changeable valve handle assembly
Inventor:
Patrick P. Barber
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Feb 2, 1999
Inventor
Patrick P. Barber
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.