Granted Patent
Utility
US 4,399,019 · App. 06/285,593
Ultra-high current density electroplating cell
Inventors:
Wayne A. Kruper, Ralph R. Green
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Jul 21, 1981
Inventors
Wayne A. Kruper
Ralph R. Green
Assignee (at issue)
Imperial Clevite 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.