2621430

Information

• Patent Grant
• 2621430

• References
• Source

• Patent Number

  2,621,430

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1952
  72 years ago

• CPC

  • G09F19/06 - Writing devices

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 313 - Electric lamp and discharge devices