Granted Patent
Utility
US 4,585,907 · App. 06/558,213
Speech synthesized telephone answering circuit
Inventor:
David P. Giammarrusco
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Dec 5, 1983
Inventor
David P. Giammarrusco
Assignee (at issue)
GTE Automatic Electric Incorporated
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.