Granted Patent
Utility
US 5,565,388 · App. 08/415,792
Bronze glass composition
Inventors:
John F. Krumwiede, Larry J. Shelestak, Anthony V. Longobardo
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Apr 3, 1995
Inventors
John F. Krumwiede
Larry J. Shelestak
Anthony V. Longobardo
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.