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发明名称
Tongue switch holding device
摘要
申请公布号
US1899408(A)
申请公布日期
1933.02.28
申请号
US19310577068
申请日期
1931.11.24
申请人
BELL JR EDWARD;DIXON ISRAEL K
发明人
JR EDWARD BELL,;DIXON ISRAEL K.
分类号
E01B7/04
主分类号
E01B7/04
代理机构
代理人
主权项
地址
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