Door alarm
United States Patent 3197588
US Patent References:
/0463793.html
- - 0463793

/0759814.html
- - 0759814

Burglar-alarm
- - 1399170

Alarm system
- - 1608201

Electric-circuit-controlling apparatus
- - 1627357


Inventors:
Baldwin, Charles R.
William, Baldwin
Publication Date:
07/27/1965
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Assignee:
Baldwin, Charles R.
William, Baldwin
Primary Class:
200/61.680
Other Classes:
340/542, 200/243
International Classes:
E05B45/08; E05B45/00
US Patent References:
1923450Push button switch construction
2523125Switch
2615083Burglar alarm system
2824300Closure alarm device
2835760Door switch
3011163Burglar alarm
Foreign References:
DE378980C
DE416658C