1989292

Information

• Patent Grant
• 1989292

• References
• Source

• Patent Number

  1,989,292

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1935
  90 years ago

• CPC

  • H01K3/26 - Closing of vessels

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 220 - Receptacles