Interrogation gate for an electronic article surveillance system

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Information

Patent Grant
D319195

References
Source

Patent Number
D319,195
Date Filed
Tuesday, September 27, 1988
36 years ago
Date Issued
Tuesday, August 20, 1991
33 years ago

Inventors
Original Assignees
- 3M COMPANY
Examiners
- Word; A. Hugo
- Clark; Doris
Agents
- Griswold; Gary L.
- Kirn; Walter N.
- Barte; William B.

US Classifications
- D10 - Measuring, testing, or signalling instruments
- D25 - Building units and construction elements
Field of Search
- US
- D25 50-51
- D25 39-40
- D10 106-121
- 340 568
- 340 571
- 340 572
- 340 574
- 340 578
- 256 73
- 109 2
- 109 5
- 109 6
- 109 10
- 109 11-12
- 109 58
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for an interrogation gate for an electronic article surveillance system, as shown.

US Referenced Citations (5)

Number	Name	Date	Kind
D297221	Podhrasky	Aug 1988
D307400	Armstrong et al.	Apr 1990
3950696	Miller et al.	Apr 1976
4274090	Cooper	Jun 1981
4384281	Cooper	May 1983