Granted Patent
Utility
US 4,316,178 · App. 06/113,674
Digital-to-analog conversion system with compensation circuit
Inventors:
Akinori Shibayama, Kenji Maio, Masao Hotta, Norio Yokozawa
Patented Case
View Patent ↗
Granted: Feb 16, 1982
Filed: Jan 21, 1980
Inventors
Akinori Shibayama
Kenji Maio
Masao Hotta
Norio Yokozawa
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.