Granted Patent
Utility
US 4,524,588 · App. 06/553,664
Air conditioner with improved fresh air path
Inventor:
Ralph W. Bond
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Nov 21, 1983
Inventor
Ralph W. Bond
Assignee (at issue)
Amana Refrigeration, 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.