3689620

Information

• Patent Grant
• 3689620

• References
• Source

• Patent Number

  3,689,620

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  53 years ago

• CPC

  • D01F2/04 - from cuprammonium solutions
  • D01D5/06 - Wet spinning methods

• US Classifications

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