2720641

Information

• Patent Grant
• 2720641

• References
• Source

• Patent Number

  2,720,641

• Date Filed

  Not available

• Date Issued

  Tuesday, October 11, 1955
  69 years ago

• CPC

  • G04C13/03 - Pulse transmission systems with additional means for setting the time indication of slave-clocks
  • G08B3/1008 - Personal calling arrangements or devices

• US Classifications

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