Granted Patent
Utility
US 6,581,697 · App. 10/058,724
Power impact tool torque apparatus
Inventor:
David A. Giardino
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Jan 28, 2002
Inventor
David A. Giardino
Assignee (at issue)
Chicago Pneumatic Tool Company
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.