FR902838A - Dispositif photo-électrique pour l'indication électrique à distance des valeurs de mesure d'instruments de mesure très sensibles
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Dispositif photo-électrique pour l'indication électrique à distance des valeurs de mesure d'instruments de mesure très sensibles
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Licentia Patent Verwaltungs GmbH
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Licentia Patent Verwaltungs GmbH
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G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
G08C19/00—Electric signal transmission systems
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FR902838D1943-04-091944-03-21Dispositif photo-électrique pour l'indication électrique à distance des valeurs de mesure d'instruments de mesure très sensibles
ExpiredFR902838A
(fr)