-
公开(公告)号：US1751409A
公开(公告)日：1930-03-18
申请号：US12926326
申请日：1926-08-14
Applicant: JAMES JACKSON SAMUEL
Inventor： JAMES JACKSON SAMUEL
IPC: G10K13/00
CPC classification number: G10K13/00
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
