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发明名称
Apparatus for electrically detecting and indicating the degree of smoothness of a surface
摘要
申请公布号
GB768487(A)
申请公布日期
1957.02.20
申请号
GB19550009748
申请日期
1955.04.04
申请人
GENERAL MOTORS CORPORATION
发明人
分类号
G01B7/34
主分类号
G01B7/34
代理机构
代理人
主权项
地址
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