Granted Patent
Utility
US 4,493,624 · App. 06/527,664
Lubricating oil-separating device in a refrigerant compressor for air conditioning systems
Inventor:
Masahiro Iio
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Aug 30, 1983
Inventor
Masahiro Iio
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.