Granted Patent
Utility
US 4,712,987 · App. 06/862,758
Vane compressor provided with endless camming surface minimizing torque fluctuations
Inventor:
Kenichi Inomata
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: May 13, 1986
Inventor
Kenichi Inomata
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.