3166642

Information

• Patent Grant
• 3166642

• References
• Source

• Patent Number

  3,166,642

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1965
  60 years ago

• CPC

  • H04Q1/36 - Pulse-correcting arrangements
  • H03F3/62 - Two-way amplifiers
  • H04B3/42 - Circuits for by-passing of ringing signals
  • H04M1/60 - including speech amplifiers
  • H04M19/006 - Circuits for increasing the range of current supply source

• US Classifications

  • 379 - Telephonic communications