1744533

Information

• Patent Grant
• 1744533

• References
• Source

• Patent Number

  1,744,533

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1930
  95 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