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公开(公告)号：US2207194A
公开(公告)日：1940-07-09
申请号：US16267037
申请日：1937-09-07
Applicant: CHARLES D ALTICK , LLOYD D SMILEY
Inventor： GRUENDLER WILLIAM P
IPC: B02C13/26
CPC classification number: B02C13/26
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公开(公告)号：US2011595A
公开(公告)日：1935-08-20
申请号：US70130933
申请日：1933-12-07
Applicant: CHARLES D ALTICK , EDWARD T TURNER
Inventor： SMILEY LLOYD D
IPC: D21C7/14
CPC classification number: D21C7/14
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