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发明名称
Telephone ringer
摘要
申请公布号
US3346858(A)
申请公布日期
1967.10.10
申请号
US19650456702
申请日期
1965.05.18
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
ROBERTON JAMES SAMUEL PATERSON;DYMOKE-BRADSHAW LESLIE EUGENE BASIL;LOTAY NIRMAL SINGH
分类号
G10K1/063;G10K1/064
主分类号
G10K1/063
代理机构
代理人
主权项
地址
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