Granted Patent
Utility
US 5,017,097 · App. 07/471,510
Control valve device for variable capacity compressors
Inventor:
Nobuyuki Nakajima
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Jan 29, 1990
Inventor
Nobuyuki Nakajima
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.