2644293

Information

• Patent Grant
• 2644293

• References
• Source

• Patent Number

  2,644,293

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1953
  71 years ago

• CPC

  • G04C3/042 - using mechanical coupling

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 318 - Electricity: motive power systems
  • 968 - Horology