3870888

Information

• Patent Grant
• 3870888

• References
• Source

• Patent Number

  3,870,888

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1975
  50 years ago

• CPC

  • H01J41/08 - with ionisation by means of radioactive substances

• US Classifications

  • 250 - Radiant energy
  • 313 - Electric lamp and discharge devices