3257127

Information

• Patent Grant
• 3257127

• References
• Source

• Patent Number

  3,257,127

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1966
  58 years ago

• CPC

  • B42D3/10 - with locks or closures
  • B42D12/00 - Book-keeping books, forms or arrangements

• US Classifications

  • 281 - Books, strips, and leaves
  • 229 - Envelopes, wrappers, and paperboard boxes