Granted Patent
Utility
US 5,034,416 · App. 07/472,389
Carboxylic acid compositions
Inventor:
Walton J. Smith
Patented Case
View Patent ↗
Granted: Jul 23, 1991
Filed: Feb 1, 1990
Inventor
Walton J. Smith
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.