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Application filed by Von Der Heide Dr HermannfiledCriticalVon Der Heide Dr Hermann
Publication of CH68942ApublicationCriticalpatent/CH68942A/en
CH68942A1914-04-231914-04-23
Preparations for waterproofing porous stone and plaster materials, earthy and fibrous insulating materials and the like
CH68942A
(en)
Means for making especially porous stones and materials for plastering, earthy and threaded insulation materials and the like waterproof and weatherproof.