1890643

Information

• Patent Grant
• 1890643

• References
• Source

• Patent Number

  1,890,643

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1932
  92 years ago

• CPC

  • D06C7/04 - Carbonising or oxidising

• US Classifications

  • 008 - Bleaching and dyeing
  • 028 - Textiles: manufacturing
  • 034 - Drying and gas or vapor contact with solids
  • 264 - Plastic and nonmetallic article shaping or treating: processes