3612773

Information

• Patent Grant
• 3612773

• References
• Source

• Patent Number

  3,612,773

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1971
  53 years ago

• CPC

  • H03B5/24 - active element in amplifier being semiconductor device
  • H04M1/50 - by generating or selecting currents of predetermined frequencies or combinations of frequencies
  • H03B2201/0283 - the means functioning digitally

• US Classifications

  • 379 - Telephonic communications