1986291

Information

• Patent Grant
• 1986291

• References
• Source

• Patent Number

  1,986,291

• Date Filed

  Not available

• Date Issued

  Tuesday, January 1, 1935
  90 years ago

• CPC

  • D21J1/00 - Fibreboard
  • Y10S162/03 - Wetting agent

• US Classifications

  • 162 - Paper making and fiber liberation