Intrusion detector unit

- C & K Systems, Inc.
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Description

FIG. 1 is a left perspective view of an intrusion detector unit showing my new design;

FIG. 2 is a right perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D234920 April 1976 Koster et al.
D261740 November 10, 1981 Lederer
D264318 May 11, 1982 Guscott et al.
D275657 September 25, 1984 Kahl, Jr.
D275658 September 25, 1984 Kahl, Jr. et al.
Patent History
Patent number: D307245
Type: Grant
Filed: Jul 29, 1987
Date of Patent: Apr 17, 1990
Assignee: C & K Systems, Inc. (San Jose, CA)
Inventor: Jack Biersdorff (Los Altos, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Marcus Jackson
Law Firm: Limbach, Limbach & Sutton
Application Number: 7/79,490
Classifications
Current U.S. Class: D10/106