2690550

Information

• Patent Grant
• 2690550

• References
• Source

• Patent Number

  2,690,550

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1954
  70 years ago

• CPC

  • G04C15/0036 - provided with means for indicating disturbance
  • G04B19/30 - Illumination of dials or hands

• US Classifications

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