3737898

Information

• Patent Grant
• 3737898

• References
• Source

• Patent Number

  3,737,898

• Date Filed

  Not available

• Date Issued

  Tuesday, June 5, 1973
  51 years ago

• CPC

  • H04M3/64 - Arrangements for signalling the number or class of the calling line to the operator

• US Classifications

  • 340 - Communications: electrical
  • 345 - Computer graphics processing and selective visual display systems