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United States Patent	D307,245
Biersdorff	April 17, 1990

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

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Inventors:	Biersdorff; Jack (Los Altos, CA)
Assignee:	C & K Systems, Inc. (San Jose, CA)
Appl. No.:	07/079,490
Filed:	July 29, 1987

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Current U.S. Class:	D10/106
Field of Search:	D10/106 340/539,541,545,546,547,550,551,561,562,565,571,572

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References Cited

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U.S. Patent Documents

D234920	April 1976	Koster et al.
D261740	November 1981	Lederer
D264318	May 1982	Guscott et al.
D275657	September 1984	Kahl, Jr.
D275658	September 1984	Kahl, Jr. et al.

Primary Examiner: Burke; Wallace R.
Assistant Examiner: Jackson; Marcus
Attorney, Agent or Firm: Limbach, Limbach & Sutton

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Description

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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.

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