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公开(公告)号:US1389655A
公开(公告)日:1921-09-06
申请号:US40279420
申请日:1920-08-11
Applicant: HAFELFINGER FREDERICK E
Inventor: HAFELFINGER FREDERICK E
IPC: B60C23/04
CPC classification number: B60C23/0403
公开(公告)号:US1389655A
公开(公告)日:1921-09-06
申请号:US40279420
申请日:1920-08-11
Applicant: HAFELFINGER FREDERICK E
Inventor: HAFELFINGER FREDERICK E
IPC: B60C23/04
CPC classification number: B60C23/0403