21 ELECTRICAL FIRE AND BURGLARY ALARM SYSTEMS AND PARTS THEREOF, SAID SYSTEMS BEING DESIGNED FOR INDIVIDUAL INSTALLATION IN DWELLINGS, BUSINESS BUILDINGS, INDUSTRIAL PLANTS, INSTITUTIONS, AND ON FARMS WITHOUT ANY SIGNALLING CONNECTION TO A REMOTE CENTRAL STATION OR COMMUNITY HEADQUARTERS, AND ADAPTED TO GIVE A LOCAL WARNING TO THE OCCUPANTS OF THE PREMISES WHEN SAME ARE ENDANGERED BY FIRE OR BURGLARY, SAID SYSTEMS CONTAINING VISIBLE AND/OR AUDIBLE ALARM APPARATUS ADAPTED TO BE THERMOSTATICALLY ACTUATED IN CASE OF FIRE AND,IN CASE OF BURGLARY, ADAPTED TO BE ACTUATED BY ENTRANCEDETECTING MEANS AT WINDOWS AND DOORWAYS
Trademark: 71589449
