220195

Information

• Patent Grant
• 220195

• References
• Source

• Patent Number

  220,195

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1879
  146 years ago

• CPC

  • G04F7/04 - using a mechanical oscillator

• US Classifications

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