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经营范围
发明名称
Pneumatic sending valve
摘要
申请公布号
US1996107(A)
申请公布日期
1935.04.02
申请号
US19320625566
申请日期
1932.07.29
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HAMPTON LEON N.;GIERTSEN OYVIND N.
分类号
B65G51/02
主分类号
B65G51/02
代理机构
代理人
主权项
地址
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