Granted Patent
Utility
US 4,819,440 · App. 07/096,410
Sliding-vane rotary compressor with displacememt-adjusting mechanism, and controller for such variable displacement compressor
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Sep 15, 1987
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.