Granted Patent
Utility
US 5,394,774 · App. 08/067,598
Power tong with interchangeable jaws
Inventor:
George Dlask
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: May 27, 1993
Inventor
George Dlask
Assignee (at issue)
McCoy Bros. Group, A Corporate Partnership
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.