Granted Patent
Utility
US 4,384,937 · App. 06/043,378
Production of chromic acid in a three-compartment cell
Inventors:
Nicholas Shuster, Andrew D. Babinsky
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: May 29, 1979
Inventors
Nicholas Shuster
Andrew D. Babinsky
Assignee (at issue)
Diamond Shamrock 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.