-
公开(公告)号：US2441744A
公开(公告)日：1948-05-18
申请号：US56774644
申请日：1944-12-11
Applicant: KENNETH BARKER
Inventor： KENNETH BARKER
IPC: A01B31/00
CPC classification number: A01B31/00
Search Results
1
records
(took 0.007 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
