2215335

Information

• Patent Grant
• 2215335

• References
• Source

• Patent Number

  2,215,335

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1940
  85 years ago

• CPC

  • D21H5/06 - Apparatus
  • D21H27/02 - Patterned paper
  • D21H21/28 - Colorants; Pigments or opacifying agents
  • D21H25/005 - Mechanical treatment

• US Classifications

  • 162 - Paper making and fiber liberation