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F23Q21/00—Devices for effecting ignition from a remote location
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FR371943D1906-11-231906-11-23Appareil perfectionné pour l'allumage et l'extinction à distance des becs de gaz situés dans les rues ou autres
ExpiredFR371943A
(fr)
Améliorations apportées dans l'établissement des chaudières et dans les briquetages employés pour ce genre d'installation ou pour des usages semblables