1570022

Information

• Patent Grant
• 1570022

• References
• Source

• Patent Number

  1,570,022

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1926
  99 years ago

• CPC

  • G11B3/50 - Anvils or other supports opposing stylus forces
  • H04Q3/0016 - Arrangements providing connection between exchanges

• US Classifications

  • 370 - Multiplex communications
  • 379 - Telephonic communications
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER