Granted Patent
Utility
US 4,817,154 · App. 06/939,971
Method and apparatus for encoding and decoding speech signal primary information
Inventor:
Elmer A. Hoyer
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Dec 9, 1986
Inventor
Elmer A. Hoyer
Assignee (at issue)
NCR 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.