2138669

Information

• Patent Grant
• 2138669

• References
• Source

• Patent Number

  2,138,669

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1938
  86 years ago

• CPC

  • G10C1/04 - of grand pianofortes
  • G10C1/00 - General design

• US Classifications

  • 084 - Music