2744583

Information

• Patent Grant
• 2744583

• References
• Source

• Patent Number

  2,744,583

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1956
  68 years ago

• CPC

  • G10K15/02 - Synthesis of acoustic waves
  • G04C21/12 - by electro-acoustic means
  • G10H1/0033 - Recording/reproducing or transmission of music for electrophonic musical instruments
  • H04R1/20 - Arrangements for obtaining desired frequency or directional characteristics
  • H04R5/02 - Spatial or constructional arrangements of loudspeakers

• US Classifications

  • 340 - Communications: electrical
  • 984 - Musical instruments