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经营范围
发明名称
Elevator levelling mechanism
摘要
申请公布号
US2891636(A)
申请公布日期
1959.06.23
申请号
US19550493894
申请日期
1955.03.14
申请人
PARKMASTER SYSTEMS INC.
发明人
KRIEGER RICHARD S.;PORTER WILLIAM J.
分类号
E04H6/42
主分类号
E04H6/42
代理机构
代理人
主权项
地址
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