Spring sash balance housing,申请号US19300438691-传众专利搜索

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发明名称	Spring sash balance housing
摘要
申请公布号	US1907830(A)	申请公布日期	1933.05.09
申请号	US19300438691	申请日期	1930.03.25
申请人	KERSTING ALBERT H	发明人	KERSTING ALBERT H.
分类号	E05D13/00	主分类号	E05D13/00
代理机构		代理人
主权项
地址

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