3671658

Information

• Patent Grant
• 3671658

• References
• Source

• Patent Number

  3,671,658

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • G10H1/344 - Structural association with individual keys
  • G10H2220/281 - with two contacts, switches or sensor triggering levels along the key kinematic path
  • Y10S84/07 - Electric key switch structure

• US Classifications

  • 084 - Music
  • 984 - Musical instruments