Granted Patent
Utility
US 4,565,928 · App. 06/421,403
Photo electro transducer device
Inventors:
Hideaki Yamamoto, Toru Baji, Toshihisa Tsukada, Akira Sasano
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Sep 22, 1982
Inventors
Hideaki Yamamoto
Toru Baji
Toshihisa Tsukada
Akira Sasano
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
HITACHI, 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.