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公开(公告)号：US2029635A
公开(公告)日：1936-02-04
申请号：US71712634
申请日：1934-03-23
Applicant: BIRDY RALSON ALFRED
Inventor： BIRDY RALSON ALFRED
IPC: B65G15/48
CPC classification number: B65G15/48 , B65G2201/06 , Y10T24/16 , Y10T24/1672
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