Granted Patent
Utility
US 5,050,474 · App. 07/335,383
Analog signal synthesizer in PCM
Inventors:
Toru Ogawa, Seijchi Sato
Patented Case
View Patent ↗
Granted: Sep 24, 1991
Filed: Apr 10, 1989
Inventors
Toru Ogawa
Seijchi Sato
Assignee (at issue)
Namco 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.