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发明名称
PUSH BUTTON SWITCH FOR USE IN KEYSETS FOR TELEPHONE INSTRUMENTS
摘要
申请公布号
CA876299(A)
申请公布日期
1971.07.20
申请号
CAD876299
申请日期
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
ROLF B. ANDREN
分类号
主分类号
代理机构
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