1372054

Information

• Patent Grant
• 1372054

• References
• Source

• Patent Number

  1,372,054

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1921
  103 years ago

• CPC

  • G11B3/50 - Anvils or other supports opposing stylus forces

• US Classifications

  • 181 - Acoustics
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER