3649775

Information

• Patent Grant
• 3649775

• References
• Source

• Patent Number

  3,649,775

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • H04R19/10 - signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
  • H04R1/16 - Mounting or connecting stylus to transducer with or without damping means

• US Classifications

  • 369 - Dynamic information storage or retrieval