3863828

Information

• Patent Grant
• 3863828

• References
• Source

• Patent Number

  3,863,828

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1975
  50 years ago

• CPC

  • B42F15/0035 - suspended at both extremities
  • B42C7/001 - Manufacturing suspended files

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes
  • 040 - Card, picture, or sign exhibiting
  • 281 - Books, strips, and leaves
  • 312 - Supports: cabinet structure