Granted Patent
Utility
US 4,486,692 · App. 06/422,711
DC Motor control circuit for drop-out of stopping pulses in recorder
Inventors:
Masakazu Sonoda, Takashi Terashima, Minoru Ozawa
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Sep 24, 1982
Inventors
Masakazu Sonoda
Takashi Terashima
Minoru Ozawa
Assignee (at issue)
SONY GROUP 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.