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发明名称
Accordion
摘要
申请公布号
US2220660(A)
申请公布日期
1940.11.05
申请号
US19380186021
申请日期
1938.01.21
申请人
UMBERTO RAZZABONI
发明人
RAZZABONI UMBERTO
分类号
G10D11/00
主分类号
G10D11/00
代理机构
代理人
主权项
地址
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