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公开(公告)号：US2257953A
公开(公告)日：1941-10-07
申请号：US39203041
申请日：1941-05-06
Applicant: HASKELL GEORGE F
Inventor： HASKELL GEORGE F
IPC: A01K91/00
CPC classification number: A01K91/00 , D07B5/005 , D07B5/02 , D07B2201/1024 , D07B2205/103 , D07B2205/2046 , D07B2801/10
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