Granted Patent
Utility
US 4,237,321 · App. 05/966,101
2,4,5-Trichlorophenol process
Inventor:
Eric Cuthbertson
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Dec 4, 1978
Inventor
Eric Cuthbertson
Assignee (at issue)
Sterling Drug, 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.