Granted Patent
Utility
US 4,908,378 · App. 07/336,966
Benzopyran derivatives and antihypertensive use thereof
Inventors:
Richard Soll, Paul J. Dollings
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Apr 12, 1989
Inventors
Richard Soll
Paul J. Dollings
Assignee (at issue)
Amerimas Home Products, 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.