1522667

Information

• Patent Grant
• 1522667

• References
• Source

• Patent Number

  1,522,667

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1925
  100 years ago

• CPC

  • F26B21/024 - by using movable fan units

• US Classifications

  • 034 - Drying and gas or vapor contact with solids
  • 015 - Brushing, scrubbing, and general cleaning
  • 416 - Fluid reaction surfaces
  • 454 - Ventilation