Granted Patent
Utility
US 4,510,659 · App. 06/478,790
Method for manufacturing a vane compressor having a lightweight rotor
Inventor:
Michio Okazaki
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Mar 25, 1983
Inventor
Michio Okazaki
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.