Granted Patent
Utility
US 4,858,677 · App. 07/061,268
Automobile air-conditioning apparatus with air blower control
Inventors:
Shigetoshi Doi, Yoshiaki Nagayama, Katsumi Iida, Yoshihiko Sakurai
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Jun 12, 1987
Inventors
Shigetoshi Doi
Yoshiaki Nagayama
Katsumi Iida
Yoshihiko Sakurai
Assignees (at issue)
Mazda Motor Corporation
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.