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1.发明授权Holder for highly reactive cathodes of rare-earth borides such as lanthanum hexaboride,the holder provided with a cooling means opposite to the emissive end of the cathode in order to reduce tendency of holder deterioration 失效持有高强度阴极的罕见地幔ES AS AS AS H IDE IDE，，，ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION ATION
公开(公告)号：US3462635A
公开(公告)日：1969-08-19
申请号：US3462635D
申请日：1966-10-24
Applicant: IBM
Inventor： BROERS ALEC N
IPC: H01J1/20 , H01J29/04 , H01J37/065 , H01J37/07 , H01J37/073 , H01J37/075 , H01J1/88 , H01J7/24 , H01J61/52
CPC classification number: H01J1/20 , H01J29/04 , H01J37/065 , H01J37/07 , H01J37/073 , H01J37/075
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2.发明授权Electron beam apparatus incorporating a hollow pyramidal indirectly heated cathode member 失效配有中空PYRAMIDAL间接加热阴极会员的电子束设备
公开(公告)号：US3521113A
公开(公告)日：1970-07-21
申请号：US3521113D
申请日：1969-02-19
Applicant: IBM
Inventor： BROERS ALEC N
IPC: H01J1/20 , H01J37/075 , H01J1/02
CPC classification number: H01J1/20 , H01J37/075
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