1054580

Information

• Patent Grant
• 1054580

• References
• Source

• Patent Number

  1,054,580

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1913
  111 years ago

• CPC

  • G04B21/005 - Periodical acoustic signalling arrangements

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology