240090

Information

• Patent Grant
• 240090

• References
• Source

• Patent Number

  240,090

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1881
  143 years ago

• CPC

  • G04B9/025 - Acoustical or electrical indicating means

• US Classifications

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