Processes Of Heating Or Heater Operation Patents (Class 432/1)
- Providing flame or high luminosity (Class 432/20)
- Including recycling work atmosphere (Class 432/21)
- Establishing strata, layer or curtain (Class 432/22)
- Establishing or maintaining composition of atmosphere bathing work (Class 432/23)
- Modulating or stabilizing pressure or temperature (Class 432/24)
- Providing pulsed or periodically reversed atmosphere (Class 432/25)
- By mode of admission of treating or protecting fluid (Class 432/26)