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Priority claimed from US852844Aexternal-prioritypatent/US3121698A/en
Application filed by Nat Lead CofiledCriticalNat Lead Co
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Publication of DK104589CpublicationCriticalpatent/DK104589C/da
Process of coating cellulosic particles by polymerizing a 1-olefin onto said particles; process of removing the cellulosic particles from the coated particles and hollowshells obtained therefrom