2640311

Information

• Patent Grant
• 2640311

• References
• Source

• Patent Number

  2,640,311

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1953
  72 years ago

• CPC

  • G04B27/06 - with rocking bar

• US Classifications

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