Granted Patent
Utility
US 4,370,863 · App. 06/243,071
Air conditioner
Inventor:
J. David Fisher
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Mar 12, 1981
Inventor
J. David Fisher
Assignee (at issue)
Engineered Air Systems
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.