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公开(公告)号：US2644191A
公开(公告)日：1953-07-07
申请号：US23712351
申请日：1951-07-17
Applicant: MEYER FRED J
Inventor： MEYER FRED J
IPC: A47G5/04
CPC classification number: A47G5/04 , Y10S16/11 , Y10S160/09 , Y10T16/354 , Y10T16/375
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公开(公告)号：US2980202A
公开(公告)日：1961-04-18
申请号：US40357954
申请日：1954-01-12
Applicant: MEYER FRED J
Inventor： MEYER FRED J
IPC: B01J19/12
CPC classification number: B01J19/125
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