2273441

Information

• Patent Grant
• 2273441

• References
• Source

• Patent Number

  2,273,441

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1942
  83 years ago

• CPC

  • H01K3/26 - Closing of vessels

• US Classifications

  • 053 - Package making
  • 065 - Glass manufacturing
  • 219 - Electric heating