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发明名称
Vehicle operated gate
摘要
申请公布号
US1798699(A)
申请公布日期
1931.03.31
申请号
US19290340387
申请日期
1929.02.16
申请人
RALSTON ALFRED I
发明人
RALSTON ALFRED I.
分类号
E05F13/02
主分类号
E05F13/02
代理机构
代理人
主权项
地址
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