572440

Information

• Patent Grant
• 572440

• References
• Source

• Patent Number

  572,440

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1896
  128 years ago

• CPC

  • G04B9/025 - Acoustical or electrical indicating means

• US Classifications

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