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公开(公告)号：US1846848A
公开(公告)日：1932-02-23
申请号：US25137028
申请日：1928-02-02
Applicant: REYNOLDS SPRING CO
Inventor： COSTIGAN WESLEY S
IPC: A47C7/34
CPC classification number: A47C7/34
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公开(公告)号：US1589116A
公开(公告)日：1926-06-15
申请号：US71622924
申请日：1924-05-27
Applicant: REYNOLDS SPRING CO
Inventor： COSTIGAN WESLEY S
IPC: B21F33/02
CPC classification number: B21F33/025
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