Granted Patent
Utility
US 4,445,924 · App. 06/383,414
Auxiliary side heater for a float glass forming chamber
Inventors:
Earl L. May, William W. Baltzer
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Jun 1, 1982
Inventors
Earl L. May
William W. Baltzer
Assignee (at issue)
PPG Industries, Inc.
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.