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公开(公告)号：US2944836A
公开(公告)日：1960-07-12
申请号：US75383458
申请日：1958-08-07
Applicant: DALTON FOUNDRIES INC
Inventor： MATTHEWS CLELL R
IPC: B60D1/54
CPC classification number: B60D1/54
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公开(公告)号：US2869896A
公开(公告)日：1959-01-20
申请号：US70458957
申请日：1957-12-23
Applicant: DALTON FOUNDRIES INC
Inventor： MATTHEWS CLELL R , COLE RABEN H
IPC: B60D1/06
CPC classification number: B60D1/065
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