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发明名称
Gas meter
摘要
申请公布号
US1893601(A)
申请公布日期
1933.01.10
申请号
US19310547856
申请日期
1931.06.30
申请人
THE SPRAGUE METER COMPANY
发明人
SPRAGUE HENRY H.
分类号
G01F3/22
主分类号
G01F3/22
代理机构
代理人
主权项
地址
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