Granted Patent
Utility
US 6,602,394 · App. 09/744,706
Alkali zinc nickel bath
Inventor:
Ernst-Walter Hillebrand
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Jan 30, 2001
Inventor
Ernst-Walter Hillebrand
Assignee (at issue)
Walter Hillebrand GmbH & Co. Galvanotechnik
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.