FR440843A - Dispositif ouvrant et fermant alternativement et automatiquement une conduite d'irrigation de mine ou autre conduite similaire
- Google Patents
Dispositif ouvrant et fermant alternativement et automatiquement une conduite d'irrigation de mine ou autre conduite similaire
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Paul Mueller Co
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Paul Mueller Co
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Publication of FR440843ApublicationCriticalpatent/FR440843A/fr
E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
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Engineering & Computer Science
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Mining & Mineral Resources
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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Geology
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FR440843D1912-03-021912-03-02Dispositif ouvrant et fermant alternativement et automatiquement une conduite d'irrigation de mine ou autre conduite similaire
ExpiredFR440843A
(fr)