3570358

Information

• Patent Grant
• 3570358

• References
• Source

• Patent Number

  3,570,358

• Date Filed

  Not available

• Date Issued

  Tuesday, March 16, 1971
  53 years ago

• CPC

  • G10D7/023 - Recorders

• US Classifications

  • 084 - Music
  • 984 - Musical instruments