Improvements in step ladders,申请号GB19460004777-传众专利搜索

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发明名称	Improvements in step ladders
摘要
申请公布号	GB608099(A)	申请公布日期	1948.09.09
申请号	GB19460004777	申请日期	1946.02.15
申请人	B. ROBINSON & COMPANY (BOLTON) LIMITED;EDWARD CHARLSON	发明人
分类号	E06C1/32	主分类号	E06C1/32
代理机构		代理人
主权项
地址

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