Ultrasonic intrusion detector

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Information

Patent Grant
D266996

References
Source

Patent Number
D266,996
Date Filed
Thursday, February 7, 1980
44 years ago
Date Issued
Tuesday, November 23, 1982
41 years ago

Inventors
- Kenneth E. Beeson
- H. Patrick Thornton
Original Assignees
- American District Telegraph Company
Examiners
- Lucas; Susan J.
Agents
- Weingarten, Schurgin & Gagnebin

US Classifications
- D10 - Measuring, testing, or signalling instruments
Field of Search
- US
- D10 106
- D10 121
- 340 522
- 340 541
- 340 542
- 340 552
- 340 551
- 340 553
- 340 561
- 340 562
- 340 565
- 340 566
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for an ultrasonic intrusion detector, as shown and described.

US Referenced Citations (2)

Number	Name	Date	Kind
D219316	Lohr	Nov 1970
D226539	Pearsall	Mar 1973

Non-Patent Literature Citations (1)

Entry
Nutone Catalog, .COPYRGT.1979, p. 35, Ultrasonic Motion Detector.