1214989

Information

• Patent Grant
• 1214989

• References
• Source

• Patent Number

  1,214,989

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1917
  107 years ago

• CPC

  • G04C13/028 - transmission systems for synchronisation of pendulum of slave-clocks by pendulums of master-clocks

• US Classifications

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