3923238

Information

• Patent Grant
• 3923238

• References
• Source

• Patent Number

  3,923,238

• Date Filed

  Not available

• Date Issued

  Tuesday, December 2, 1975
  49 years ago

• CPC

  • B31B1/74 - Auxiliary operations; Parts; Components
  • B65D75/50 - Tetrahedral packages
  • D21H19/20 - comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • B31B2201/621 - Coating or impregnating edges or corners

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes