Granted Patent
Utility
US 6,705,409 · App. 09/941,324
Reciprocating tool having a piston retaining system
Inventor:
Pradip K. Paul
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Aug 30, 2001
Inventor
Pradip K. Paul
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.