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Individual
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Individual
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Priority to ES24174ApriorityCriticalpatent/ES24174A3/en
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ES24174A1899-05-031899-05-03
A process to make soluble the products resulting directly from the distillation of vegetable or mineral tar.
ExpiredES24174A3
(en)
A procedure for the partial vacuum distillation of the kernel from the exudation of pine and its derivatives, pitch and rosin, as well as obtaining their essential and fixed products.