Granted Patent
Utility
US 5,927,323 · App. 09/064,088
Pressure control valve
Inventors:
Hideya Kikuchi, Etsuro Hozumi, Akinao Minegishi, Nobuo Aoki, Shigeru Kashiwaba, Fujio Aoki
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Apr 22, 1998
Inventors
Hideya Kikuchi
Etsuro Hozumi
Akinao Minegishi
Nobuo Aoki
Shigeru Kashiwaba
Fujio Aoki
Assignee (at issue)
Zexel GmbH
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.