Door/window intrusion detector transmitter

- Dicon Systems Limited
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Description

FIG. 1 is a front perspective view of a door/window intrusion detector transmitter showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, with the right side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D242438 November 1976 Kissel
D246034 October 11, 1977 Sparks et al.
D285668 September 16, 1986 Tanaka et al.
D286383 October 28, 1986 Kotlicki et al.
Patent History
Patent number: D307874
Type: Grant
Filed: Nov 16, 1987
Date of Patent: May 15, 1990
Assignee: Dicon Systems Limited (Toronto)
Inventor: John Mallory (Mississauga)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Marcus Jackson
Law Firm: Lee, Mann, Smith, McWilliams & Sweeney
Application Number: 7/121,575
Classifications
Current U.S. Class: D10/106