Granted Patent
Utility
US 4,430,110 · App. 06/402,670
Shaping sheets of glass or other deformable material to a compound curvature
Inventors:
Robert G. Frank, George R. Claassen, John J. Ewing, Michael T. Fecik
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Jul 28, 1982
Inventors
Robert G. Frank
George R. Claassen
John J. Ewing
Michael T. Fecik
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.