2138766

Information

• Patent Grant
• 2138766

• References
• Source

• Patent Number

  2,138,766

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1938
  86 years ago

• CPC

  • B65D5/3678 - collapsed along median lines of two opposite sides and the central panel
  • B31B1/00 - Box, carton, envelope or bag making machinery characterised by performing specific operations
  • B65D5/3642 - the secured corners presenting diagonal, bissecting or similar folding lines, the central panel presenting no folding line
  • B31B2201/2654 - by plungers moving through folding dies
  • B31B2201/267 - by reciprocating or oscillating members
  • B31B2203/006 - Collapsing already made boxes into a flat condition

• US Classifications

  • 493 - Manufacturing container or tube from paper