Granted Patent
Utility
US 4,855,462 · App. 07/207,839
Antihistamines
Inventors:
Ronald C. Griffith, James J. Napier
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Jun 17, 1988
Inventors
Ronald C. Griffith
James J. Napier
Assignee (at issue)
Pennwalt 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.