-
公开(公告)号：US1825142A
公开(公告)日：1931-09-29
申请号：US35381129
申请日：1929-04-09
Applicant: CLARENCE W FULLER
Inventor： BRUNO WILLIAM A
IPC: G03B21/32
CPC classification number: G03B21/323 , Y10S242/908
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
