3871573

Information

• Patent Grant
• 3871573

• References
• Source

• Patent Number

  3,871,573

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1975
  49 years ago

• CPC

  • B65D27/32 - Opening devices incorporated during envelope manufacture
  • B43M7/004 - including non-mechanical means

• US Classifications

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