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公开(公告)号：US2946157A
公开(公告)日：1960-07-26
申请号：US77893958
申请日：1958-12-08
Applicant: FRANZ EARL E , FRANZ JR EARL E
Inventor： FRANZ EARL E , FRANZ JR EARL E
CPC classification number: A47K10/10 , A47K2201/00 , E04B1/38
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公开(公告)号：US2843359A
公开(公告)日：1958-07-15
申请号：US57295856
申请日：1956-03-21
Applicant: FRANZ EARL E , FRANZ JR EARL E
Inventor： FRANZ EARL E , FRANZ JR EARL E
IPC: A01B1/16
CPC classification number: A01B1/16
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