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公开(公告)号:US2672638A
公开(公告)日:1954-03-23
申请号:US19830750
申请日:1950-11-30
Applicant: PAUL BLUM
Inventor: PAUL BLUM
IPC: A47L1/08
CPC classification number: A47L1/08
公开(公告)号:US2722701A
公开(公告)日:1955-11-08
申请号:US27203252
申请日:1952-02-18
Applicant: PAUL BLUM , DORA BLUM
Inventor: PAUL BLUM , DORA BLUM
公开(公告)号:US2560079A
公开(公告)日:1951-07-10
申请号:US15925850
申请日:1950-05-01
IPC: A45B5/00 , A47C9/10
CPC classification number: A47C4/286 , A45B5/00 , A47C9/10