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公开(公告)号：US1865104A
公开(公告)日：1932-06-28
申请号：US54300631
申请日：1931-06-08
Applicant: BURKLE HOLDERER GEORGE , CLARK LE ROY V
Inventor： BURKLE HOLDERER GEORGE , CLARK LE ROY V
IPC: C06B43/00
CPC classification number: C06B43/00 , Y10S502/526
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