-
公开(公告)号：US900009A
公开(公告)日：1908-09-29
申请号：US1908417832
申请日：1908-02-26
Applicant: CLEVELAND STEEL TOOL COMPANY
Inventor： DOOLITTLE JOHN F
CPC classification number: B23B31/20 , Y10T279/17512
-
公开(公告)号：US1368327A
公开(公告)日：1921-02-15
申请号：US34963120
申请日：1920-01-05
Applicant: CLEVELAND STEEL TOOL COMPANY
Inventor： DOOLITTLE JOHN F
IPC: B21D28/34
CPC classification number: B21D28/34 , Y10T279/17581 , Y10T279/17881
-
公开(公告)号：US1489881A
公开(公告)日：1924-04-08
申请号：US42113120
申请日：1920-11-01
Applicant: CLEVELAND STEEL TOOL COMPANY
Inventor： DOOLITTLE JOHN F
IPC: B21D28/34
CPC classification number: B21D28/34 , Y10T279/17881
-
-
Search Results
3
records
(took 0.024 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
