Window balance,申请号US19490086742-传众专利搜索

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发明名称	Window balance
摘要
申请公布号	US2597459(A)	申请公布日期	1952.05.20
申请号	US19490086742	申请日期	1949.04.11
申请人	GRAND RAPIDS HARDWARE COMPANY	发明人	DICKINSON HENRY R.;SWIERBUT MICHAEL N.
分类号	E05D13/00;E05F1/16	主分类号	E05D13/00
代理机构		代理人
主权项
地址

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