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公开(公告)号：US699420A
公开(公告)日：1902-05-06
申请号：US1901076673
申请日：1901-09-26
Applicant: SHEPHERD ROBERT L , BRADFORD HENRY B JR
Inventor： SHEPHERD ROBERT L , BRADFORD HENRY B JR
CPC classification number: B65H23/1882 , B41F19/00
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