Patent search ap:("OTTO PRIMAVESL") AND inv:"OTTO PRIMAVESL" Page 1

1.

发明授权
Process for producing white mechanical wood pulp from pine wood 失效
Title translation: 从松木生产白色机械木浆的方法

公开(公告)号：US2240017A

公开(公告)日：1941-04-29

申请号：US19750338

申请日：1938-03-22

Applicant: OTTO PRIMAVESL

Inventor： OTTO PRIMAVESL

IPC: D21B1/16

CPC classification number: D21B1/16

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