2228113

Information

• Patent Grant
• 2228113

• References
• Source

• Patent Number

  2,228,113

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1941
  84 years ago

• CPC

  • H04Q5/08 - Signalling by continuous ac
  • H04Q3/42 - Circuit arrangements for indirect selecting controlled by common circuits

• US Classifications

  • 379 - Telephonic communications