Granted Patent
Utility
US 4,504,341 · App. 06/549,051
Fabricating shaped laminated transparencies
Inventors:
John E. Radzwill, Roger F. Bartoli
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Nov 7, 1983
Inventors
John E. Radzwill
Roger F. Bartoli
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.