Granted Patent
Utility
US 5,809,454 · App. 08/678,370
Audio reproducing apparatus having voice speed converting function
Inventors:
Shigeyuki Okada, Hideki Yamauchi, Masayuki Iida, Hiroshi Tanaka
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Jun 28, 1996
Inventors
Shigeyuki Okada
Hideki Yamauchi
Masayuki Iida
Hiroshi Tanaka
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.