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公开(公告)号:US2783560A
公开(公告)日:1957-03-05
申请号:US32479352
申请日:1952-12-08
申请人: JOSIE M BROWN , RUTH BROWN MCCLUNEY , MILDRED BROWN TURNS , GLADYS BROWN CARNES , CHARLES H BROWN JR , VIVIAN BROWN HAMILTON
发明人: BROWN CARNES GLADYS
CPC分类号: E02F5/027 , E02F3/7627
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公开(公告)号:US2783557A
公开(公告)日:1957-03-05
申请号:US27596152
申请日:1952-03-11
申请人: JOSIE M BROWN , RUTH BROWN MCCLUNEY , MILDRED BROWN TURNS , GLADYS BROWN CARNES , CHARLES H BROWN JR , VIVIAN BROWN HAMILTON
发明人: BROWN CARNES GLADYS
IPC分类号: E02F5/02
CPC分类号: E02F5/027
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