-
公开(公告)号:US2010430A
公开(公告)日:1935-08-06
申请号:US59957832
申请日:1932-03-17
Applicant: STANDARD OIL DEV CO
Inventor: HOWARD FRANK A , SHEPARD DAVID A , FISHER HAROLD W
-
公开(公告)号:US1998401A
公开(公告)日:1935-04-16
申请号:US53519431
申请日:1931-05-05
Applicant: STANDARD OIL DEV CO
Inventor: SHEPARD DAVID A
IPC: B01J37/00
CPC classification number: B01J37/00 , B01J37/0009
-