Granted Patent
Utility
US 4,450,031 · App. 06/530,424
Ion shower apparatus
Inventors:
Toshiro Ono, Seitaro Matsuo
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Sep 8, 1983
Inventors
Toshiro Ono
Seitaro Matsuo
Assignee (at issue)
Nippon Telegraph and Telephone Public Corporation
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.