Granted Patent
Utility
US 6,135,093 · App. 09/256,071
Plunger pump
Inventors:
Hideya Kikuchi, Etsuro Hozumi, Akinao Minegishi, Hitoshi Okuyama, Akinori Yamazaki
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Feb 24, 1999
Inventors
Hideya Kikuchi
Etsuro Hozumi
Akinao Minegishi
Hitoshi Okuyama
Akinori Yamazaki
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.