3148247

Information

• Patent Grant
• 3148247

• References
• Source

• Patent Number

  3,148,247

• Date Filed

  Not available

• Date Issued

  Tuesday, September 8, 1964
  60 years ago

• CPC

  • H03K17/74 - using diodes
  • H03K17/60 - using bipolar transistors
  • H03K17/6242 - with several inputs only and without selecting means
  • H03K17/6257 - with several inputs only combined with selecting means
  • H03K17/81 - Switching arrangements with several input- or output-terminals
  • H04Q3/00 - Selecting arrangements
  • H04Q3/521 - using semiconductors in the switching stages

• US Classifications

  • 340 - Communications: electrical
  • 379 - Telephonic communications