Granted Patent
Utility
US 4,742,329 · App. 06/822,900
Digital/analog converter
Inventors:
Yasuhiro Yamada, Masanori Kajitani
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Jan 27, 1986
Inventors
Yasuhiro Yamada
Masanori Kajitani
Assignee (at issue)
SANYO ELECTRIC CO., 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.