Means for retaining the ends of the ribs of umbrellas and the like in closed position.专利检索- .保持伞闭合的装置例如磁性装置专利检索查询-专利查询网

Means for retaining the ends of the ribs of umbrellas and the like in closed position.
申请号	US1912730584	申请日	1912-11-11	公开(公告)号	US1073631A	公开(公告)日	1913-09-23
申请人	REVEL ANTOINE AIME;			发明人	REVEL ANTOINE AIME;
摘要
权利要求
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