3550421

Information

• Patent Grant
• 3550421

• References
• Source

• Patent Number

  3,550,421

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1970
  54 years ago

• CPC

  • B31B45/00 - Machinery characterised by making containers having corrugated or pleated walls
  • A21B3/132 - Assemblies of several baking-tins or forms
  • B21D51/2646 - Of particular non cylindrical shape
  • B31B2201/2654 - by plungers moving through folding dies
  • B31B2201/2695 - involving corrugating or pleating
  • B31B2201/927 - in stacks or bundles
  • B31B2203/062 - Making conical or pyramidal boxes Making boxes of varying cross-section
  • B31B2203/064 - Making boxes of curved cross section

• US Classifications

  • 072 - Metal deforming
  • 493 - Manufacturing container or tube from paper