Granted Patent
Utility
US 4,749,028 · App. 07/021,543
Air conditioner system with combustion heater for automobiles
Inventors:
Eiji Okura, Ichizo Tomita, Hiroyuki Ida
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Feb 27, 1987
Inventors
Eiji Okura
Ichizo Tomita
Hiroyuki Ida
Assignee (at issue)
Diesel Kiki 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.