3616638

Information

• Patent Grant
• 3616638

• References
• Source

• Patent Number

  3,616,638

• Date Filed

  Not available

• Date Issued

  Tuesday, November 2, 1971
  53 years ago

• CPC

  • G04C3/108 - Driving circuits
  • G04C11/081 - using an electro-magnet

• US Classifications

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