1327118

Information

• Patent Grant
• 1327118

• References
• Source

• Patent Number

  1,327,118

• Date Filed

  Not available

• Date Issued

  Tuesday, January 6, 1920
  105 years ago

• CPC

  • G11B3/007 - Devices for controlling sound

• US Classifications

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