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PETITS FILS FRANCOIS WENDEL
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PETITS FILS FRANCOIS WENDEL
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Publication of FR784746ApublicationCriticalpatent/FR784746A/fr
F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
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FR784746D1934-04-161934-04-16Appareil pour le changement des mines avec de la neige carbonique ou autres produits et pour opérations analogues
ExpiredFR784746A
(fr)