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公开(公告)号：US2570148A
公开(公告)日：1951-10-02
申请号：US15306850
申请日：1950-03-31
Applicant: PROSPERITY CO INC
Inventor： JOHN NEUROTH , SMITH JAMES C
IPC: D06F33/02
CPC classification number: D06F33/02 , D06F2204/04 , Y10T137/729 , Y10T137/7368 , Y10T137/7404 , Y10T137/7737 , Y10T137/7762
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