-
公开(公告)号：US1996552A
公开(公告)日：1935-04-02
申请号：US74642834
申请日：1934-10-01
Applicant: MENGEL COMPANY
Inventor： WILLIAM SCHWENDER EDWARD
IPC: A47B61/00
CPC classification number: A47B61/003
Search Results
1
records
(took 0.017 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
