3673354

Information

• Patent Grant
• 3673354

• References
• Source

• Patent Number

  3,673,354

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1972
  52 years ago

• CPC

  • H04R21/00 - Variable-resistance transducers
  • G01L1/18 - using properties of piezo-resistive materials
  • H04R1/16 - Mounting or connecting stylus to transducer with or without damping means
  • H04R17/08 - signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
  • H04R21/04 - Gramophone pick-ups using a stylus Recorders using a stylus
  • H04R23/006 - using solid state devices

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 338 - Electrical resistors
  • 381 - Electrical audio signal processing systems and devices