1997979

Information

• Patent Grant
• 1997979

• References
• Source

• Patent Number

  1,997,979

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1935
  89 years ago

• CPC

  • G04C11/026 - the time-piece preparing itself on set times on the reception of the sychronising signal
  • G04R20/20 - the radio signal being an AM/FM standard signal

• US Classifications

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