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发明名称
Adjustable speed drive
摘要
申请公布号
US1828944(A)
申请公布日期
1931.10.27
申请号
US19290336446
申请日期
1929.01.31
申请人
ROSSMAN PATENTS, INCORPORATED
发明人
ROSSMAN ALLEN M.
分类号
H02P5/695
主分类号
H02P5/695
代理机构
代理人
主权项
地址
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