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发明名称
Automatic door controlling mechanism
摘要
申请公布号
US2588597(A)
申请公布日期
1952.03.11
申请号
US19470739132
申请日期
1947.04.03
申请人
THE JOYCE-CRIDLAND COMPANY
发明人
WEBSTER WARREN;BERK KENNETH E.
分类号
B66F7/16;B66F7/28
主分类号
B66F7/16
代理机构
代理人
主权项
地址
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