JPH0392348U - - Google Patents

Info

Publication number

JPH0392348U

JPH0392348U JP15209489U JP15209489U JPH0392348U JP H0392348 U JPH0392348 U JP H0392348U JP 15209489 U JP15209489 U JP 15209489U JP 15209489 U JP15209489 U JP 15209489U JP H0392348 U JPH0392348 U JP H0392348U

Authority

JP

Japan

Prior art keywords

filament

directly heated

control electrode

heated cathode

radioactive substance

Prior art date

1989-12-29

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

Links

• Espacenet
• Global Dossier
• Discuss

• 239000000941 radioactive substance Substances 0.000 claims 2
• 230000002093 peripheral effect Effects 0.000 claims 1
• 239000012857 radioactive material Substances 0.000 description 1

Cited By (1)