2257429

Information

• Patent Grant
• 2257429

• References
• Source

• Patent Number

  2,257,429

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1941
  83 years ago

• CPC

  • B31F1/128 - Making paper elastic in all directions, other than by crêping
  • D21H5/24 - having enhanced flexibility or extensibility produced by mechanical treatment of the unfinished paper
  • D21H25/005 - Mechanical treatment

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus