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发明名称
Door operator
摘要
申请公布号
US2380302(A)
申请公布日期
1945.07.10
申请号
US19440517176
申请日期
1944.01.06
申请人
WILLIAM P. SIDLEY;M. F. BACK;ALBERT P. WITHALL;EDWIN C. AUSTIN;GEORGE A. JOHNSON;ALICE T. MINER
发明人
GEIGER WILLIAM A.
分类号
B60P3/20;E05B65/16
主分类号
B60P3/20
代理机构
代理人
主权项
地址
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