G04C21/00—Producing acoustic time signals by electrical means
G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
G04C21/22—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm put into action by the arbor of a mechanical alarm work
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Physics & Mathematics
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General Physics & Mathematics
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Electromechanical Clocks
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Electric Clocks
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Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices
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Procede d'eclairage portatif utilisant une lampe fluorescente compacte 10 w montee sur un support type camping et alimentee par un transformateur convertisseur 12 v courant continu - 220 v courant alternatif incorpore - utilisations diverses partout ou le secteur edf est absent