Burglar alarm

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Description

FIG. 1 is a perspective view of a burglar alarm showing my new design, the chain being shown in broken lines for illustrative purposes only;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and

FIG. 5 is a view of the side opposite that shown in FIG. 2.

Referenced Cited
U.S. Patent Documents
D227410 June 1973 Yip
3406386 October 1968 Hawkins
3560952 February 1971 Wilson
Foreign Patent Documents
702390 February 1941 DEX
Other references
  • Merchandising Week, 8-28-1972, p. 9, Door Alarm.
Patent History
Patent number: D252850
Type: Grant
Filed: Jun 29, 1977
Date of Patent: Sep 11, 1979
Inventors: Clarence W. Jorgensen, deceased (LATE OF Gurnee, IL), by Elva M. Jorgensen, executrix (Gurnee, IL)
Primary Examiner: Susan J. Lucas
Attorney: Neil E. Hamilton
Application Number: 5/811,996
Classifications
Current U.S. Class: D/8332; D10/106
International Classification: D0807; D1005;