Mirror-based device for the detection and/or emission of radiation, in particular infrared radiation
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Opening anti-breaking device
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DEVICE FOR DETECTING LENS RADIATION AND MIRRORS
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Method of operating a security system for the protection of people and property
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Residence Security system operating process, involves activating unlocking unit when activation unit is activated during delay time, and activating signaling device if activation unit is activated after delay time
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Building door, learning method and method of use
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Multifrequency surveillance and/or alarm apparatus and method
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Method and device for supplying electric power to an electronic circuit and to a power demanding device controlled by this circuit
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Device for detecting light radiation
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Method and device for receiving radio signals on multiple frequencies
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Method and device for frequency setting of a radioelectric signal receiver
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Method and device for radioelectric transmission of original signals, in particular sound signals
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Zone detection monitoring and / or alarm system
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Method and device for radio transmission of original signals, especially sound signals
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Radiotelephony post
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Device for transmitting and / or receiving radiolelectric signals on two frequencies, a single antenna, and an alarm system comprising such a device
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DEVICE FOR DETECTING THE BREAKAGE OF AN ELECTRIC LINE, IN PARTICULAR A TELEPHONE LINE
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Device forming antenna for transmitting and / or receiving radioelectric signals
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Mounting device for positioning and holding two parts in relation to one another
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Method for operating at least one radioelectric signal receiver located in the vicinity of a radiant organs or apparatus
