3843844

Information

• Patent Grant
• 3843844

• References
• Source

• Patent Number

  3,843,844

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • H04M19/006 - Circuits for increasing the range of current supply source
  • H04Q3/00 - Selecting arrangements

• US Classifications

  • 379 - Telephonic communications