Granted Patent
Utility
US 5,498,007 · App. 08/189,794
Double gas barrier seal
Inventors:
Sunil B. Kulkarni, Randy R. Dingman
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Feb 1, 1994
Inventors
Sunil B. Kulkarni
Randy R. Dingman
Assignee (at issue)
Durametallic Corporation
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.