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公开(公告)号:US2454098A
公开(公告)日:1948-11-16
申请号:US51235643
申请日:1943-11-30
Applicant: ARTHUR V WHITTINGTON
Inventor: SCHMIDT JOHN G
IPC: B23B31/20
CPC classification number: B23B31/201 , Y10T279/17521 , Y10T279/17555 , Y10T279/3425
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公开(公告)号:US2399831A
公开(公告)日:1946-05-07
申请号:US53931444
申请日:1944-06-08
Applicant: ARTHUR V WHITTINGTON
Inventor: SCHMIDT JOHN G
IPC: B23B31/40
CPC classification number: B23B31/4033 , Y10T82/268 , Y10T279/1008 , Y10T279/1045 , Y10T279/3425
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