2389254

Information

• Patent Grant
• 2389254

• References
• Source

• Patent Number

  2,389,254

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1945
  79 years ago

• CPC

  • D21H5/1281 - by chemical treatment
  • D21H5/00 - Special paper or cardboard not otherwise provided for
  • D21H25/02 - Chemical or biochemical treatment

• US Classifications

  • 008 - Bleaching and dyeing
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 264 - Plastic and nonmetallic article shaping or treating: processes