-
公开(公告)号:US1100891A
公开(公告)日:1914-06-23
申请号:US1913777328
申请日:1913-07-03
Applicant: KREISER JOHN R
Inventor: KREISER JOHN R
CPC classification number: B21K1/707
公开(公告)号:US1100891A
公开(公告)日:1914-06-23
申请号:US1913777328
申请日:1913-07-03
Applicant: KREISER JOHN R
Inventor: KREISER JOHN R
CPC classification number: B21K1/707