Granted Patent
Utility
US 4,337,076 · App. 06/210,447
Ribbon edge detector and system for metering flow of molten glass
Inventor:
Hugh E. Shaw, Jr.
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Nov 26, 1980
Inventor
Hugh E. Shaw, Jr.
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.