1846708

Information

• Patent Grant
• 1846708

• References
• Source

• Patent Number

  1,846,708

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1932
  93 years ago

• CPC

  • H04M11/00 - Telephonic communication systems adapted for combination with other electrical systems
  • G04C11/023 - provided with arrangements to prevent synchronisation by interfering signals
  • 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