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公开(公告)号：US1944844A
公开(公告)日：1934-01-23
申请号：US53844231
申请日：1931-05-19
Applicant: HARTFORD EMPIRE CO
Inventor： PELLER KARL E , SMITH ALGY J
IPC: C03B9/18
CPC classification number: C03B9/18
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