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发明名称
CONVERTIBLE COMBINATION PLATFORM AND STEP FOR LADDERS
摘要
申请公布号
US3422923(A)
申请公布日期
1969.01.21
申请号
USD3422923
申请日期
1967.10.03
申请人
ORDELL R. LUND
发明人
ORDELL R. LUND
分类号
E06C7/14;(IPC1-7):E06C7/14
主分类号
E06C7/14
代理机构
代理人
主权项
地址
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