Granted Patent
Utility
US 4,325,723 · App. 06/210,711
Transferring rigid sheets from one conveyor to another
Inventors:
John D. Kellar, Gordon F. Pereman
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: Nov 26, 1980
Inventors
John D. Kellar
Gordon F. Pereman
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.