2285425

Information

• Patent Grant
• 2285425

• References
• Source

• Patent Number

  2,285,425

• Date Filed

  Not available

• Date Issued

  Tuesday, June 9, 1942
  82 years ago

• CPC

  • H04M3/487 - Arrangements for providing information services
  • G04C21/14 - Electro-acoustic time announcement

• US Classifications

  • 379 - Telephonic communications
  • 968 - Horology