2680150

Information

• Patent Grant
• 2680150

• References
• Source

• Patent Number

  2,680,150

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1954
  70 years ago

• CPC

  • G04C21/14 - Electro-acoustic time announcement

• US Classifications

  • 379 - Telephonic communications
  • 059 - Chain, staple, and horseshoe making
  • 346 - Recorders
  • 368 - Horology: time measuring systems or devices
  • 369 - Dynamic information storage or retrieval
  • 968 - Horology