Granted Patent
Utility
US 4,142,192 · App. 05/816,059
Electrographic process and apparatus with recording after toning
Inventor:
Hiroshi Ochi
Patented Case
View Patent ↗
Granted: Feb 27, 1979
Filed: Jul 15, 1977
Inventor
Hiroshi Ochi
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.