2331975

Information

• Patent Grant
• 2331975

• References
• Source

• Patent Number

  2,331,975

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1943
  81 years ago

• CPC

  • G10D17/00 - Musical instruments not provided for in any of the preceding groups

• US Classifications

  • 084 - Music
  • 984 - Musical instruments