1779664

Information

• Patent Grant
• 1779664

• References
• Source

• Patent Number

  1,779,664

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1930
  95 years ago

• CPC

  • H04L15/30 - Writing recorders

• US Classifications

  • 346 - Recorders
  • 178 - Telegraphy