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发明名称
APPARATUS FOR APPLYING A MORTAR COATING AND TROWELING SAME ON THE INTERIOR WALLS OF PIPE LINES AND ENCLOSED CONDUITS
摘要
申请公布号
US3590445(A)
申请公布日期
1971.07.06
申请号
USD3590445
申请日期
1969.07.15
申请人
WALTER HEINRICH BRAUN
发明人
WALTER HEINRICH BRAUN
分类号
B28B19/00;(IPC1-7):B28B21/92
主分类号
B28B19/00
代理机构
代理人
主权项
地址
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