System for exploiting the energy of rising air currents in ventilation flues
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PLANT FOR UTILIZING THE ENERGY OF AIRFLOWS RISING IN FIREPLACES
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Protective door systems
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Power plant utilising chimney draught - has wind driven generator with stator which is combined with chimney flue and draught which rises upwards to drive rotor
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Power plant utilising chimney draught - has wind driven generator with stator which is combined with chimney flue and draught which rises upwards to drive rotor
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Security room access system with intermediate antechamber - in which identity of person attempting access is verified with exit of intruder being blocked
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Protecting a room against penetration
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Security room access system with intermediate antechamber - in which identity of person attempting access is verified with exit of intruder being blocked
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Room protection plant
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Anti-robbery and anti-hostage equipment provided with a one-way rotating door for banks and the like
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Anti robbery protection equipment
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Security vehicle for transporting valuables
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Bank building
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Improvements in or relating to burglar alarm systems
