-
公开(公告)号：US1443538A
公开(公告)日：1923-01-30
申请号：US54533922
申请日：1922-03-20
Applicant: STANDARD DEV CO
Inventor： HOWARD FRANK A , KENT GEORGE H L , JENNINGS JAMES M
CPC classification number: A62D1/0071 , C10L1/00 , C10L1/006 , Y10S516/02
Search Results
1
records
(took 0.019 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
