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公开(公告)号：US2215764A
公开(公告)日：1940-09-24
申请号：US18261937
申请日：1937-12-30
Applicant: OKESSON OTTO A , PERSON ALGOT E
Inventor： OKESSON OTTO A , PERSON ALGOT E
IPC: A01K85/10
CPC classification number: A01K85/10
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