-
公开(公告)号：US2294562A
公开(公告)日：1942-09-01
申请号：US28458839
申请日：1939-07-15
Applicant: HYGRADE SYIVANIA CORP
Inventor： KINGSTON WALTER E
CPC classification number: C23C16/26 , H01J19/00 , H01J2893/0023 , Y10S428/926 , Y10S428/938 , Y10T428/12625 , Y10T428/12937 , Y10T428/12944 , Y10T428/12958 , Y10T428/12972 , Y10T428/12986
Search Results
1
records
(took 0.008 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
