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公开(公告)号：US20030011292A1
公开(公告)日：2003-01-16
申请号：US09905481
申请日：2001-07-13
Applicant: Microwave Power Technology
Inventor： Robert J. Espinosa
IPC: H01J001/05
CPC classification number: B82Y10/00 , H01J3/021 , H01J2201/30469 , Y10S977/939
Abstract: An electron source including a nanostructured carbon electron-emitting film and an electron extraction grid spaced closely adjacent the surface of said film.
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