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发明名称
PONTOON BRIDGE
摘要
申请公布号
CA311580(A)
申请公布日期
1931.05.19
申请号
CAD311580
申请日期
申请人
RASMUS P. RASMUSSEN
发明人
JOSEPH H. TOURCHETTE
分类号
主分类号
代理机构
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