1504531

Information

• Patent Grant
• 1504531

• References
• Source

• Patent Number

  1,504,531

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1924
  100 years ago

• CPC

  • G10F3/00 - Independent players for keyboard instruments
  • G10F1/02 - Pianofortes with keyboard

• US Classifications

  • 084 - Music