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发明名称
Speed-recording mechanism
摘要
申请公布号
US1791759(A)
申请公布日期
1931.02.10
申请号
US19250068935
申请日期
1925.11.14
申请人
JOHN HERSTEDT;JOHN WIBERG
发明人
HERSTEDT JOHN;WIBERG JOHN
分类号
G01P1/12
主分类号
G01P1/12
代理机构
代理人
主权项
地址
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