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发明名称
Oscillation generator for noisemaking devices
摘要
申请公布号
US2521405(A)
申请公布日期
1950.09.05
申请号
US19450579068
申请日期
1945.02.21
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
PHELPS BYRON E.
分类号
G10H5/00;H03B29/00
主分类号
G10H5/00
代理机构
代理人
主权项
地址
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