3817591

Information

• Patent Grant
• 3817591

• References
• Source

• Patent Number

  3,817,591

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • H01K3/20 - Sealing-in wires directly into the envelope
  • H01K1/38 - Seals for leading-in conductors

• US Classifications

  • 445 - Electric lamp or space discharge component or device manufacturing
  • 313 - Electric lamp and discharge devices