Granted Patent
Utility
US 4,564,446 · App. 06/487,257
Self-contained sewage waste disposal system
Inventors:
Kenneth J. De Graw, William R. Bocchini, Brian Wilcockson, Armen Bogossian, Robert J. Uhl, Earl E. Nause, Ernest R. Ramirez
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Apr 21, 1983
Inventors
Kenneth J. De Graw
William R. Bocchini
Brian Wilcockson
Armen Bogossian
Robert J. Uhl
Earl E. Nause
Ernest R. Ramirez
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.