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发明名称
General purpose extensible hitch
摘要
申请公布号
US2873981(A)
申请公布日期
1959.02.17
申请号
US19550480144
申请日期
1955.01.06
申请人
ALVA GRANT;WARREN GRANT
发明人
GRANT ALVA;GRANT WARREN
分类号
B60D1/155
主分类号
B60D1/155
代理机构
代理人
主权项
地址
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