Granted Patent
Utility
US 4,306,572 · App. 06/171,855
Axial flow stripper plate
Inventors:
Steven J. Campbell, Marc Christenson, Edward A. Relf
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jul 24, 1980
Inventors
Steven J. Campbell
Marc Christenson
Edward A. Relf
Assignee (at issue)
Sperry Corp.
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.