1833758

Information

• Patent Grant
• 1833758

• References
• Source

• Patent Number

  1,833,758

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1931
  93 years ago

• CPC

  • H04R11/00 - Transducers of moving-armature or moving-core type
  • E21F15/06 - Filling-up mechanically
  • H04R7/20 - Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

• US Classifications

  • 181 - Acoustics