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发明名称
Photoelectric automatic blade level control
摘要
申请公布号
US2916836(A)
申请公布日期
1959.12.15
申请号
US19550517868
申请日期
1955.06.24
申请人
STEWART KARL J;JOHNSON DONALD L
发明人
STEWART KARL J.;JOHNSON DONALD L.
分类号
E02F3/84;G01C15/00
主分类号
E02F3/84
代理机构
代理人
主权项
地址
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