-
公开(公告)号：US2771878A
公开(公告)日：1956-11-27
申请号：US30663652
申请日：1952-08-27
Applicant: AMERICAN OPTICAL CORP
Inventor： FOLLAND WILLARD E , ELLIS CHARLES A
CPC classification number: A61M5/1415 , A61M5/16845 , A61M5/16877
-
公开(公告)号：US3022858A
公开(公告)日：1962-02-27
申请号：US84250259
申请日：1959-09-25
Applicant: AMERICAN OPTICAL CORP
Inventor： TILLYER EDGAR D , FOLLAND WILLARD E
CPC classification number: B01D53/22 , B01D63/06 , B01D2313/18 , B01D2319/04 , C01B23/00
-
Search Results
2
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
