2869110

Information

• Patent Grant
• 2869110

• References
• Source

• Patent Number

  2,869,110

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1959
  65 years ago

• CPC

  • H04Q9/06 - Calling by using amplitude or polarity of dc
  • Y10T307/461 - Selectively connected or controlled load circuits

• US Classifications

  • 340 - Communications: electrical
  • 307 - Electrical transmission or interconnection systems