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发明名称
Indicating device for ladders and the like
摘要
申请公布号
US2845719(A)
申请公布日期
1958.08.05
申请号
US19550502929
申请日期
1955.04.21
申请人
THOMISZER HUBERT J
发明人
THOMISZER HUBERT J.
分类号
E06C7/00;G01C9/24;G01C9/26
主分类号
E06C7/00
代理机构
代理人
主权项
地址
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