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公开(公告)号：US2696800A
公开(公告)日：1954-12-14
申请号：US24661251
申请日：1951-09-14
Applicant: JOHN RORK
Inventor： JOHN RORK
IPC: A01K63/00
CPC classification number: A01K63/003 , A01K63/00
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