1662948

Information

• Patent Grant
• 1662948

• References
• Source

• Patent Number

  1,662,948

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1928
  96 years ago

• CPC

  • B21D53/82 - perforated music sheets pattern sheets
  • G10G3/04 - using electrical means

• US Classifications

  • 084 - Music