-
公开(公告)号：US2206464A
公开(公告)日：1940-07-02
申请号：US73597934
申请日：1934-07-19
Applicant: FISHER H NESMITH
Inventor： LAWRENCE ABBOTT W
IPC: E04F15/04
CPC classification number: E04F15/04 , E04F2015/02122 , E04F2201/0511 , E04F2201/0523
Search Results
1
records
(took 0.008 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
