Granted Patent
Utility
US 4,430,392 · App. 06/465,723
Heat activated vent
Inventors:
John A. Kelley, Curtis A. Michener
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Feb 11, 1983
Inventors
John A. Kelley
Curtis A. Michener
Assignee (at issue)
Honeywell Limited
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.