Granted Patent
Utility
US 5,594,977 · App. 08/175,731
Smooth rod-gripping apparatus
Inventor:
James P. McCallion
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Dec 30, 1993
Inventor
James P. McCallion
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.