2198617

Information

• Patent Grant
• 2198617

• References
• Source

• Patent Number

  2,198,617

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1940
  84 years ago

• CPC

  • C09H9/02 - in the form of foils

• US Classifications

  • 034 - Drying and gas or vapor contact with solids
  • 159 - Concentrating evaporators
  • 530 - Chemistry: natural resins or derivatives