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公开(公告)号：US2254458A
公开(公告)日：1941-09-02
申请号：US21090038
申请日：1938-05-31
Applicant: STANDARD PRESSED STEEL CO
Inventor： WILLIAM SWALLOW
IPC: B62D23/00
CPC classification number: B62D23/00
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公开(公告)号：US2254457A
公开(公告)日：1941-09-02
申请号：US19982638
申请日：1938-04-04
Applicant: STANDARD PRESSED STEEL CO
Inventor： WILLIAM SWALLOW
IPC: B62D23/00
CPC classification number: B62D23/00
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公开(公告)号：US2143666A
公开(公告)日：1939-01-10
申请号：US9071036
申请日：1936-07-15
Applicant: STANDARD PRESSED STEEL CO
Inventor： WILLIAM SWALLOW
IPC: B62D21/00
CPC classification number: B62D21/00
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