-
公开(公告)号：US3521972A
公开(公告)日：1970-07-28
申请号：US67498767
申请日：1967-10-12
Applicant: PASSAVANT WERKE
Inventor： ZURELL KARL
CPC classification number: C02F3/1257 , B01F3/04765 , C02F3/18 , F16C23/08 , Y02W10/15
Search Results
1
records
(took 0.006 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
