Granted Patent
Utility
US 5,074,124 · App. 07/572,031
Cooled air environment for air conditioners
Inventor:
John F. Chapman
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Aug 23, 1990
Inventor
John F. Chapman
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.