Granted Patent
Utility
US 4,681,024 · App. 06/890,417
Combination heater-light-ventilator unit
Inventor:
Charles W. Ivey
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Jul 29, 1986
Inventor
Charles W. Ivey
Assignee (at issue)
Fasco Industries, 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.