2143811

Information

• Patent Grant
• 2143811

• References
• Source

• Patent Number

  2,143,811

• Date Filed

  Not available

• Date Issued

  Tuesday, January 10, 1939
  86 years ago

• CPC

  • H04R9/025 - Magnetic circuit
  • H04R2209/021 - Reduction of eddy currents in the magnetic circuit of electrodynamic loudspeaker transducer
  • H04R2209/022 - Aspects regarding the stray flux internal or external to the magnetic circuit
  • Y10T29/49073 - by assembling coil and core
  • Y10T29/49076 - From comminuted material

• US Classifications

  • 252 - Compositions
  • 029 - Metal working
  • 106 - Compositions: coating or plastic
  • 334 - Tuners
  • 336 - Inductor devices