Granted Patent
Utility
US 4,390,710 · App. 06/312,207
Catalyst system for manufacturing p-chlorophenyl-N-methyl carbamate
Inventor:
James A. Manner
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Oct 19, 1981
Inventor
James A. Manner
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.