Granted Patent
Utility
US 4,379,031 · App. 06/225,709
Evaporation driven counterflow rinse system and method
Inventors:
James A. Krotkiewicz, Wayne A. Kruper, Otto C. Niederer, Sr.
Patented Case
View Patent ↗
Granted: Apr 5, 1983
Filed: Jan 16, 1981
Inventors
James A. Krotkiewicz
Wayne A. Kruper
Otto C. Niederer, Sr.
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.