3622681

Information

• Patent Grant
• 3622681

• References
• Source

• Patent Number

  3,622,681

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • G10H3/22 - using electromechanically actuated vibrators with pick-up means
  • Y10S84/07 - Electric key switch structure
  • Y10S84/21 - Mechanical resonator

• US Classifications

  • 084 - Music
  • 984 - Musical instruments