3780520

Information

• Patent Grant
• 3780520

• References
• Source

• Patent Number

  3,780,520

• Date Filed

  Not available

• Date Issued

  Tuesday, December 25, 1973
  52 years ago

• CPC

  • G04C3/108 - Driving circuits
  • G04C3/10 - driven by electro-magnetic means

• US Classifications

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