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经营范围
发明名称
Prefabricated door frames and door jambs
摘要
申请公布号
US2717061(A)
申请公布日期
1955.09.06
申请号
US19490132455
申请日期
1949.12.12
申请人
ROBERT KATZ
发明人
KATZ ROBERT
分类号
E06B1/52;E06B3/72;E06B3/964
主分类号
E06B1/52
代理机构
代理人
主权项
地址
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