Granted Patent
Utility
US 4,866,683 · App. 07/197,875
Integrated acoustic receiver or projector
Inventor:
Morris J. Phillips
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: May 24, 1988
Inventor
Morris J. Phillips
Assignee (at issue)
Honeywell Limited
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.