2207703

Information

• Patent Grant
• 2207703

• References
• Source

• Patent Number

  2,207,703

• Date Filed

  Not available

• Date Issued

  Tuesday, July 16, 1940
  84 years ago

• CPC

  • G04C21/14 - Electro-acoustic time announcement

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 369 - Dynamic information storage or retrieval
  • 379 - Telephonic communications