3905117

Information

• Patent Grant
• 3905117

• References
• Source

• Patent Number

  3,905,117

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1975
  49 years ago

• CPC

  • B41M3/04 - Music
  • B43L13/208 - letters, numbers, symbols

• US Classifications

  • 033 - Geometrical instruments
  • 101 - Printing