Granted Patent
Utility
US 5,230,427 · App. 07/713,893
Sterilizable hermetically-sealed substantially glass container
Inventors:
Ronald E. Betts, Douglas R. Savage, Debra J. Shane
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Jun 12, 1991
Inventors
Ronald E. Betts
Douglas R. Savage
Debra J. Shane
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.