Granted Patent
Utility
US 4,499,272 · App. 06/409,798
NH.sub.4.sup.+ Or group IA metal 2,7-dimethyl-1,2,3-tetrahydro-.beta.-hydroxy-1-quinolinepropanesulfonate s
Inventors:
John A. Hyatt, Clarence A. Coates, Jr.
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Aug 20, 1982
Inventors
John A. Hyatt
Clarence A. Coates, Jr.
Assignee (at issue)
EASTMAN KODAK 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.