Granted Patent
Utility
US 5,385,240 · App. 08/055,732
Screening apparatus with adjustable hydrofoil portion
Inventors:
John J. Egan, James R. Jamieson, David E. Suica, Gary S. Williamson
Patented Case
View Patent ↗
Granted: Jan 31, 1995
Filed: Apr 30, 1993
Inventors
John J. Egan
James R. Jamieson
David E. Suica
Gary S. Williamson
Assignee (at issue)
Black Clawson Company, 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.