Granted Patent
Utility
US 4,948,648 · App. 07/448,611
Fire resistant laminar cushioning material
Inventors:
Billie B. Dadgar, Thomas Walter
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Dec 11, 1989
Inventors
Billie B. Dadgar
Thomas Walter
Assignee (at issue)
Ethyl 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.