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发明名称
Improvements in apparatus for automatically registering the number of eggs laid by ahen
摘要
申请公布号
GB378106(A)
申请公布日期
1932.08.11
申请号
GB19310013923
申请日期
1931.05.11
申请人
GEORGE DOULL
发明人
分类号
A01K31/16
主分类号
A01K31/16
代理机构
代理人
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