JPH02124653U - - Google Patents

Info

Publication number
JPH02124653U
JPH02124653U JP3351989U JP3351989U JPH02124653U JP H02124653 U JPH02124653 U JP H02124653U JP 3351989 U JP3351989 U JP 3351989U JP 3351989 U JP3351989 U JP 3351989U JP H02124653 U JPH02124653 U JP H02124653U
Authority
JP
Japan
Prior art keywords
electron emitting
filament
electron
surrounding
flat surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3351989U
Other languages
English (en)
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP3351989U priority Critical patent/JPH02124653U/ja
Publication of JPH02124653U publication Critical patent/JPH02124653U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Electron Sources, Ion Sources (AREA)
JP3351989U 1989-03-23 1989-03-23 Pending JPH02124653U (US20050192411A1-20050901-C00001.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3351989U JPH02124653U (US20050192411A1-20050901-C00001.png) 1989-03-23 1989-03-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3351989U JPH02124653U (US20050192411A1-20050901-C00001.png) 1989-03-23 1989-03-23

Publications (1)

Publication Number Publication Date
JPH02124653U true JPH02124653U (US20050192411A1-20050901-C00001.png) 1990-10-15

Family

ID=31537240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3351989U Pending JPH02124653U (US20050192411A1-20050901-C00001.png) 1989-03-23 1989-03-23

Country Status (1)

Country Link
JP (1) JPH02124653U (US20050192411A1-20050901-C00001.png)

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