Granted Patent
Utility
US 4,867,651 · App. 07/120,152
Variable capacity vane compressor
Inventors:
Nobuyuki Nakajima, Kenichi Inomata, Shigeru Okada, Kazuo Eitai
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Nov 12, 1987
Inventors
Nobuyuki Nakajima
Kenichi Inomata
Shigeru Okada
Kazuo Eitai
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.