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经营范围
发明名称
Automatic watering trough
摘要
申请公布号
US2827015(A)
申请公布日期
1958.03.18
申请号
US19560605849
申请日期
1956.08.23
申请人
OSCAR R. WILLIAMS, SR.
发明人
JR. OSCAR R. WILLIAMS,
分类号
A01K39/022
主分类号
A01K39/022
代理机构
代理人
主权项
地址
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