3137801

Information

• Patent Grant
• 3137801

• References
• Source

• Patent Number

  3,137,801

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1964
  60 years ago

• CPC

  • H01J27/12 - provided with an expansion cup

• US Classifications

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