-
公开(公告)号：US2247120A
公开(公告)日：1941-06-24
申请号：US25434039
申请日：1939-02-03
Applicant: FITZGERALD JAMES A
Inventor： FITZGERALD JAMES A
IPC: C04B33/135 , C04B35/16
CPC classification number: C04B35/16 , C04B33/1352 , Y02P40/69
Search Results
1
records
(took 0.013 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
