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公开(公告)号：US2203126A
公开(公告)日：1940-06-04
申请号：US27259339
申请日：1939-05-09
Applicant: JAMES BELL , BELL ANNA M
Inventor： JAMES BELL , BELL ANNA M
CPC classification number: A47B23/02 , A47B23/043
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