Granted Patent
Utility
US 4,368,567 · App. 06/210,457
Glass conveyor roll finishing technique
Inventor:
Harold A. McMaster
Patented Case
View Patent ↗
Granted: Jan 18, 1983
Filed: Nov 25, 1980
Inventor
Harold A. McMaster
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.