Granted Patent
Utility
US 4,664,763 · App. 06/731,818
Process for stripping nickel or nickel-alloy plating in a chromic acid solution
Inventors:
Warren H. McMullen, William T. Walling
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: May 8, 1985
Inventors
Warren H. McMullen
William T. Walling
Assignee (at issue)
M&T Chemicals, 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.