1561471

Information

• Patent Grant
• 1561471

• References
• Source

• Patent Number

  1,561,471

• Date Filed

  Not available

• Date Issued

  Tuesday, November 17, 1925
  99 years ago

• CPC

  • B32B3/28 - characterised by a layer comprising a deformed thin sheet , i.e. the layer having its entire thickness deformed out of the plane
  • B32B11/06 - of paper or cardboard
  • Y10T428/24694 - Parallel corrugations
  • Y10T428/31823 - Paper

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 229 - Envelopes, wrappers, and paperboard boxes