Granted Patent
Utility
US 4,436,002 · App. 06/329,971
Reversal mechanism for power tong
Inventors:
Kerry S. Kennington, Ronald C. Baker
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Dec 11, 1981
Inventors
Kerry S. Kennington
Ronald C. Baker
Assignee (at issue)
Hughes Tool Company LLC
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.