Portable burglar alarm

Details Portable burglar alarm Portable burglar alarm

1981-11-09

1984-12-11

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

D10116, D10120

Patent

active

D02767090

REFERENCES:
patent: D109540 (1938-05-01), Archer
patent: D139719 (1944-12-01), Davis
patent: D245447 (1977-08-01), Brudy et al.
patent: D251878 (1979-05-01), Hade
patent: D253401 (1979-11-01), Benson et al.
Heathkit, 1977, p. 22, Siren 2, # kit GDA-1157-1, bottom left corner, (Box-Signals) & Megaphone/p. 22, Yelp Alarm, Kit GD-1818, top right corner.
California House, 1973, p. 2, Chow Table, #201, in upper left corner, box C-26.

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