Granted Patent
Utility
US 4,483,390 · App. 06/403,860
Heater core of an automotive air conditioning device
Inventors:
Katsutoshi Araya, Hiroshi Tanaami
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Jul 30, 1982
Inventors
Katsutoshi Araya
Hiroshi Tanaami
Assignees (at issue)
Nissan Motor Co., Ltd.
Nihon Radiator Co., Ltd.
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.