Granted Patent
Utility
US 4,139,561 · App. 05/881,198
Novel substituted amino-aromatic acetylenes and their method of preparation
Inventors:
Anatoli Onopchenko, Edward T. Sabourin, Charles M. Selwitz
Patented Case
View Patent ↗
Granted: Feb 13, 1979
Filed: Feb 27, 1978
Inventors
Anatoli Onopchenko
Edward T. Sabourin
Charles M. Selwitz
Assignee (at issue)
Gulf Research & Development Company
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.