Spray Type Patents (Class 159/3)
- Combustion product gas (Class 159/4.02)
- Antibridging (Class 159/4.03)
- Countercurrent (Class 159/4.04)
- Intermediate gas outlet or inlet (Class 159/4.05)
- Bottom sprayer (Class 159/4.06)
- Horizontial sprayer (Class 159/4.07)
- Impinging jets (Class 159/4.08)
- Multistaging (Class 159/4.09)
- Heat recovery (Class 159/4.1)
- Spinning sprayer (Class 159/4.2)
- Rotary drum with sprayer (Class 159/4.3)
- Steam drying or atomizing (Class 159/4.4)