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发明名称
DUAL FIRMNESS SPRING FOR BEDDING AND THE LIKE
摘要
申请公布号
US3430275(A)
申请公布日期
1969.03.04
申请号
USD3430275
申请日期
1967.03.30
申请人
WORTSO CORP.
发明人
MELVIN N. JANAPOL
分类号
A47C27/06;(IPC1-7):A47C27/00
主分类号
A47C27/06
代理机构
代理人
主权项
地址
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