2986976

Information

• Patent Grant
• 2986976

• References
• Source

• Patent Number

  2,986,976

• Date Filed

  Not available

• Date Issued

  Tuesday, June 6, 1961
  63 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
  • B31B2219/9045 - involving applying window patches
  • B31B2221/105 - obtained from rhombus shaped sheets
  • Y10S493/919 - having window

• US Classifications

  • 493 - Manufacturing container or tube from paper