26/12/1932 Improvements introduced in the machinery of the machines to sew papers
Patent of introduction Nº 128.929
https://armia-eibar.eus/en/research/digital-archive/olave-solozabal-y-cia---el-casco/articles-for-office/original-patents/patente-no128.929
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26/12/1932 Improvements introduced in the machinery of the machines to sew papers
Patent of introduction Nº 128.929
