1623211

Information

• Patent Grant
• 1623211

• References
• Source

• Patent Number

  1,623,211

• Date Filed

  Not available

• Date Issued

  Tuesday, April 5, 1927
  97 years ago

• CPC

  • G10B3/12 - Keys or keyboards Manuals

• US Classifications

  • 084 - Music
  • 984 - Musical instruments