Granted Patent
Utility
US 4,392,416 · App. 06/258,008
Swash-plate type compressor having low noise thrust bearings
Inventor:
Yutaka Ishizuka
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Apr 27, 1981
Inventor
Yutaka Ishizuka
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.