Granted Patent
Utility
US 4,433,443 · App. 06/320,599
Self-contained flow through sewage waste disposal system
Inventors:
Kenneth J. DeGraw, Brian Wilcockson, Earl W. Nickerson, William R. Bocchini, Armen Bogossian, Steve Proios
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Nov 12, 1981
Inventors
Kenneth J. DeGraw
Brian Wilcockson
Earl W. Nickerson
William R. Bocchini
Armen Bogossian
Steve Proios
Assignee (at issue)
American Standard 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.