Granted Patent
Utility
US 4,246,133 · App. 06/051,228
Stabilized diazotized sulfanilic acid solutions
Inventor:
E. Melvin Gindler
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jun 22, 1979
Inventor
E. Melvin Gindler
Assignee (at issue)
Sherwood Medical Industries 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.