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Application filed by Franz Nebel, Hansi NebelfiledCriticalFranz Nebel
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Publication of DK49075CpublicationCriticalpatent/DK49075C/da
Sätt för blekning av cellulosahaltigt material e.d., såsom cellulosa eller cellulosaderivat, eller material, innehållande sådana ämnen, jämte på sådant sätt behandlat material