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发明名称
SLIDE RULE FOR COMPUTING MUSICAL RELATIONSHIPS
摘要
申请公布号
US3592099(A)
申请公布日期
1971.07.13
申请号
USD3592099
申请日期
1969.04.11
申请人
DELBERT F. GIBBY
发明人
DELBERT F. GIBBY
分类号
G06G1/00;G09B15/00;(IPC1-7):G09B15/02
主分类号
G06G1/00
代理机构
代理人
主权项
地址
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