Granted Patent
Utility
US 5,049,043 · App. 07/497,313
Variable capacity vane compressor
Inventor:
Nobuyuki Nakajima
Patented Case
View Patent ↗
Granted: Sep 17, 1991
Filed: Mar 22, 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.