3552282

Information

• Patent Grant
• 3552282

• References
• Source

• Patent Number

  3,552,282

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1971
  54 years ago

• CPC

  • B31B21/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from sheets or blanks
  • B43M5/045 - using heat-sensitive adhesive
  • B65D27/18 - using heat-activatable adhesive
  • B65H45/142 - Pocket-type folders
  • B65H45/28 - Folding in combination with cutting
  • B31B2221/10 - the bags having no structural provision at the base for thickness of content
  • B65H2701/1916 - Envelopes and articles of mail

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 229 - Envelopes, wrappers, and paperboard boxes