Granted Patent
Utility
US 5,209,767 · App. 07/671,505
Glass sheet annealing lehr having gas support conveyor
Inventors:
Robert E. Maltby, Jr., Harold A. McMaster, Philip J. Breno, James W. Buckingham
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Mar 19, 1991
Inventors
Robert E. Maltby, Jr.
Harold A. McMaster
Philip J. Breno
James W. Buckingham
Assignee (at issue)
Glasstech, 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.