3681914

Information

• Patent Grant
• 3681914

• References
• Source

• Patent Number

  3,681,914

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1972
  52 years ago

• CPC

  • G04G9/0011 - using coded signals

• US Classifications

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