3159714

Information

• Patent Grant
• 3159714

• References
• Source

• Patent Number

  3,159,714

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1964
  60 years ago

• CPC

  • H04Q3/0008 - using relay selectors in the switching stages

• US Classifications

  • 379 - Telephonic communications