1685451

Information

• Patent Grant
• 1685451

• References
• Source

• Patent Number

  1,685,451

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1928
  96 years ago

• CPC

  • C04B41/0081 - characterised by the subsequent cooling step

• US Classifications

  • 008 - Bleaching and dyeing
  • 324 - Electricity: measuring and testing