Granted Patent
Utility
US 6,497,313 · App. 09/819,577
Power take-off unit with automatically actuated drag brake
Inventor:
James H. Blalock
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Mar 28, 2001
Inventor
James H. Blalock
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.