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ES91931A1924-12-191924-12-19Un aparato para cargar de gas acetileno los recipientes que sirven para contener acetileno disuelto en acetona.
ExpiredES91931A3
(es)
Un método para extinguir los fuegos que se produzcan en o en derredor de los tanques de hidrocarburos, con el aparato correspondiente para llevarlo a la práctica.
Un procedimiento para precintar las cajas que sirven de embalaje, mediante un aparato tensor de los flejes, en combinación con unas tenazas precintadoras.