1776774

Information

• Patent Grant
• 1776774

• References
• Source

• Patent Number

  1,776,774

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1930
  94 years ago

• CPC

  • G10F1/02 - Pianofortes with keyboard
  • G10G3/02 - using mechanical means only

• US Classifications

  • 084 - Music