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发明名称
Scotch block
摘要
申请公布号
US1801917(A)
申请公布日期
1931.04.21
申请号
US19290384260
申请日期
1929.08.08
申请人
HAYES TRACK APPLIANCE COMPANY
发明人
HAYES STANLEY W.
分类号
B61K7/20
主分类号
B61K7/20
代理机构
代理人
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