-
公开(公告)号：US1891123A
公开(公告)日：1932-12-13
申请号：US53122931
申请日：1931-04-18
Applicant: LULA UTREVIS
Inventor： LULA UTREVIS
IPC: D06F75/08
CPC classification number: D06F75/08
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
