-
公开(公告)号：US2925788A
公开(公告)日：1960-02-23
申请号：US69546057
申请日：1957-11-08
Applicant: EDMUND KETLEY RICHARD , CRAIG PATERSON JAMES
Inventor： EDMUND KETLEY RICHARD , CRAIG PATERSON JAMES
IPC: B61C5/02
CPC classification number: B61C5/02
Search Results
1
records
(took 0.008 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
