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发明名称
Metering systems
摘要
申请公布号
US3119558(A)
申请公布日期
1964.01.28
申请号
US19580757983
申请日期
1958.08.29
申请人
COMMUNICATIONS PATENTS LIMITED
发明人
KINROSS RUPERT IVOR
分类号
H04H60/22
主分类号
H04H60/22
代理机构
代理人
主权项
地址
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