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发明名称
Combination ladder and chute
摘要
申请公布号
US3063513(A)
申请公布日期
1962.11.13
申请号
US19620164946
申请日期
1962.01.08
申请人
MARRYATT EARL A
发明人
MARRYATT EARL A.
分类号
B63B27/14
主分类号
B63B27/14
代理机构
代理人
主权项
地址
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