Granted Patent
Utility
US 4,405,740 · App. 06/355,741
Polyarylene sulphide compositions
Inventor:
Glyndwr J. Davies
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Mar 3, 1982
Inventor
Glyndwr J. Davies
Assignee (at issue)
The Glacier Metal Company Limited
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.