3501732

Information

• Patent Grant
• 3501732

• References
• Source

• Patent Number

  3,501,732

• Date Filed

  Not available

• Date Issued

  Tuesday, March 17, 1970
  54 years ago

• CPC

  • H04R21/04 - Gramophone pick-ups using a stylus Recorders using a stylus
  • G01G21/12 - Devices for preventing derangement
  • G01L1/18 - using properties of piezo-resistive materials
  • G01L1/22 - using resistance strain gauges
  • G01P15/123 - by piezo-resistive elements
  • H01C10/12 - by changing surface pressure between resistive masses or resistive and conductive masses

• US Classifications

  • 338 - Electrical resistors
  • 369 - Dynamic information storage or retrieval