2071992

Information

• Patent Grant
• 2071992

• References
• Source

• Patent Number

  2,071,992

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1937
  88 years ago

• CPC

  • G10C1/04 - of grand pianofortes
  • G10C3/06 - Resonating means

• US Classifications

  • 084 - Music