Invention Grant
USB496487I5
失效
- Patent Title:
-
Application No.: US49648774Application Date: 1974-08-12
-
Publication No.: USB496487I5Publication Date: 1976-01-20
- Priority: US49648774 1974-08-12
- Main IPC: H01J1/34
- IPC: H01J1/34 ; H01J29/38 ; H01J31/50 ; H01L21/208 ; H01L29/205 ; H01L31/11 ; H01L33/00 ; H01S5/323
Public/Granted literature
- US3982261B1 Public/Granted day:1987-04-07
Information query
