IP Library Granted Patent US 4,806,747
Granted Patent Utility
US 4,806,747 · App. 07/157,779

Optical direction of arrival sensor with cylindrical lens

Inventors: David S. Dunavan, Richard Babish
Patented Case View Patent ↗
Granted: Feb 21, 1989 Filed: Mar 28, 1988
Inventors
David S. Dunavan
Richard Babish
Assignee (at issue)
PerkinElmer, Inc.

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,806,747
App. No.
07/157,779
Filed
1988-03-28
Granted
1989-02-21
Kind
A