Granted Patent
Utility
US 4,773,205 · App. 06/891,649
Anti-clogging means for bulk material flow duct
Inventors:
Loren F. Hansen, Richard Florer, John E. Hicks
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Aug 1, 1986
Inventors
Loren F. Hansen
Richard Florer
John E. Hicks
Assignee (at issue)
Outboard Marine Corporation
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.