3685389

Information

• Patent Grant
• 3685389

• References
• Source

• Patent Number

  3,685,389

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  52 years ago

• CPC

  • G10D13/04 - Timpani
  • G10D13/023 - Tuning devices; Hoops; Lugs

• US Classifications

  • 084 - Music
  • 984 - Musical instruments