2609431

Information

• Patent Grant
• 2609431

• References
• Source

• Patent Number

  2,609,431

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1952
  72 years ago

• CPC

  • G04C15/0036 - provided with means for indicating disturbance

• US Classifications

  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology