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公开(公告)号：US738367A
公开(公告)日：1903-09-08
申请号：US1902122717
申请日：1902-09-09
Applicant: HENRY W HOPKINS , SMITH CHARLES E , SMITH SARAH M
Inventor： SMITH CHARLES E , SMITH SARAH M
CPC classification number: A47B1/04
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