Granted Patent
Utility
US 4,291,084 · App. 06/067,483
Warp-free multi-layer stampable thermoplastic sheets
Inventor:
Leon Segal
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Aug 16, 1979
Inventor
Leon Segal
Assignee (at issue)
Allied Chemical 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.