Granted Patent
Utility
US 4,641,571 · App. 06/754,907
Turbo fan vent
Inventors:
William J. Anderson, Wayne R. Anderson, Larry D. Robinson
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Jul 15, 1985
Inventors
William J. Anderson
Wayne R. Anderson
Larry D. Robinson
Assignee (at issue)
Enamel Products & Plating Company
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.