2884489

Information

• Patent Grant
• 2884489

• References
• Source

• Patent Number

  2,884,489

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1959
  65 years ago

• CPC

  • H04Q3/42 - Circuit arrangements for indirect selecting controlled by common circuits
  • D01G19/04 - with pinned cylinders
  • H03K17/74 - using diodes
  • H03K17/76 - Switching arrangements with several input- or output-terminals
  • H04J3/04 - Distributors combined with modulators or demodulators
  • H04J3/042 - Distributors with electron or gas discharge tubes
  • H04M15/08 - Metering calls to called party
  • H04Q3/00 - Selecting arrangements

• US Classifications

  • 340 - Communications: electrical