Perimeter intrusion detector transmitter

- Dicon Systems Limited
Description

FIG. 1 is a front perspective view of a perimeter intrusion detector 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 bottom plan view thereof;

FIG. 6 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D261740 November 10, 1981 Lederer
4242669 December 30, 1980 Crick
4510488 April 9, 1985 St. Jean et al.
Patent History
Patent number: D307875
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: 7/121,574
Classifications
Current U.S. Class: D10/106