3346857

Information

• Patent Grant
• 3346857

• References
• Source

• Patent Number

  3,346,857

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1967
  57 years ago

• CPC

  • H04M11/005 - using recorded signals
  • G01F23/60 - using electrically actuated indicating means

• US Classifications

  • 340 - Communications: electrical