3816213

Information

• Patent Grant
• 3816213

• References
• Source

• Patent Number

  3,816,213

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • B43M7/004 - including non-mechanical means
  • B65D27/32 - Opening devices incorporated during envelope manufacture
  • Y10T156/1111 - Using solvent during delaminating [e.g., water dissolving adhesive at bonding face during delamination, etc.]
  • Y10T156/1116 - Using specified organic delamination solvent

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 053 - Package making
  • 206 - Special receptacle or package
  • 229 - Envelopes, wrappers, and paperboard boxes