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公开(公告)号：US1503668A
公开(公告)日：1924-08-05
申请号：US41845820
申请日：1920-10-21
Applicant: P A GEIER CO
Inventor： SCHILTZ BERNARD P
IPC: B30B1/24
CPC classification number: B30B1/24 , Y10T74/1558
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公开(公告)号：US1646260A
公开(公告)日：1927-10-18
申请号：US55056522
申请日：1922-04-08
Applicant: P A GEIER CO
Inventor： SCHILTZ BERNARD P
IPC: B21D3/10
CPC classification number: B21D3/10
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