Granted Patent
Utility
US 4,415,882 · App. 06/299,121
Analog to digital converter
Inventors:
Yukio Akazawa, Yasuyuki Matsuya, Atsushi Iwata
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Sep 3, 1981
Inventors
Yukio Akazawa
Yasuyuki Matsuya
Atsushi Iwata
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.