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发明名称
Water indicator
摘要
申请公布号
US1946175(A)
申请公布日期
1934.02.06
申请号
US19280328950
申请日期
1928.12.28
申请人
MURPHY FRED K;RETTERER RAYMOND W;MITCHELL FRANK K
发明人
MURPHY FRED. K.;RETTERER RAYMOND W.;MITCHELL FRANK K.
分类号
G01F23/16
主分类号
G01F23/16
代理机构
代理人
主权项
地址
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