Granted Patent
Utility
US 4,240,816 · App. 06/010,573
Method and apparatus for forming tempered sheet glass with a pyrolytic film in a continuous process
Inventors:
Harold A. McMaster, Norman C. Nitschke
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Feb 9, 1979
Inventors
Harold A. McMaster
Norman C. Nitschke
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.