Granted Patent
Utility
US 4,338,326 · App. 06/097,782
Phenoxypyridinemethyl esters of 4-alkenoic acids
Inventors:
Paul A. Cain, Thomas N. Wheeler
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Nov 27, 1979
Inventors
Paul A. Cain
Thomas N. Wheeler
Assignee (at issue)
Union Carbide 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.