Granted Patent
Utility
US 5,051,983 · App. 07/403,528
Method and circuitry for transmission of speech signals in a broad-band communications network
Inventor:
Anton Kammerl
Patented Case
View Patent ↗
Granted: Sep 24, 1991
Filed: Sep 5, 1989
Inventor
Anton Kammerl
Assignee (at issue)
Siemens Aktiengesellschaft
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.