Granted Patent
Utility
US 4,857,337 · App. 07/197,888
Enteric coated aspirin tablets
Inventors:
Ronald Miller, Raymond W. Sutton
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: May 24, 1988
Inventors
Ronald Miller
Raymond W. Sutton
Assignee (at issue)
American Home Products Corp. (Del)
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.