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发明名称
ELECTRONIC KEYBOARD WITH UPPER- AND LOWER-CASE CAPABILITY
摘要
申请公布号
US3623588(A)
申请公布日期
1971.11.30
申请号
USD3623588
申请日期
1969.04.01
申请人
BUNKER-RAMO CORP.:THE
发明人
RONALD THOMAS PRODAN
分类号
H03M11/14;H03M11/16;H03M11/22;(IPC1-7):B41J25/24
主分类号
H03M11/14
代理机构
代理人
主权项
地址
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