3892990

Information

• Patent Grant
• 3892990

• References
• Source

• Patent Number

  3,892,990

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1975
  50 years ago

• CPC

  • H01J47/08 - Geiger-Müller counter tubes

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
  • 445 - Electric lamp or space discharge component or device manufacturing