1698737

Information

• Patent Grant
• 1698737

• References
• Source

• Patent Number

  1,698,737

• Date Filed

  Not available

• Date Issued

  Tuesday, January 15, 1929
  95 years ago

• CPC

  • H04L15/30 - Writing recorders

• US Classifications

  • 178 - Telegraphy
  • 346 - Recorders
  • 369 - Dynamic information storage or retrieval