3256618

Information

• Patent Grant
• 3256618

• References
• Source

• Patent Number

  3,256,618

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1966
  58 years ago

• CPC

  • B41B1/02 - Printing letters Type
  • G09B11/04 - Guide sheets or plates Tracing charts

• US Classifications

  • 434 - Education and demonstration
  • 281 - Books, strips, and leaves
  • 402 - Binder device releasably engaging aperture or notch of sheet