3663736

Information

• Patent Grant
• 3663736

• References
• Source

• Patent Number

  3,663,736

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1972
  52 years ago

• CPC

  • G10H1/18 - Selecting circuits
  • Y10S84/07 - Electric key switch structure
  • Y10S84/19 - Light sensitive resistor
  • Y10S84/26 - Reverberation

• US Classifications

  • 084 - Music
  • 984 - Musical instruments