Granted Patent
Utility
US 4,718,845 · App. 07/018,856
Rack and pinion gear stack mold control
Inventors:
James Sheffield, John David Rathbun
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Feb 24, 1987
Inventors
James Sheffield
John David Rathbun
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.