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发明名称
Roller track
摘要
申请公布号
US1976075(A)
申请公布日期
1934.10.09
申请号
US19330661528
申请日期
1933.03.18
申请人
JOHNSON CLARENCE G
发明人
JOHNSON CLARENCE G.
分类号
E05D15/16
主分类号
E05D15/16
代理机构
代理人
主权项
地址
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