F22B 35/125
Operating with superimposed recirculation during starting or low load periods
Official title: {operating with superimposed recirculation during starting or low load periods, e.g. composite boilers}
F22B35/125 (Operating with superimposed recirculation during starting or low load periods) appears on 1 US grants and 0 published applications in this corpus.
Search patents in F22B- Granted patents
- 1
- Published applications
- 0
- Assignees
- 1
- Inventors
- 1
- Latest grant
- 22 Sep 1981
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
No published applications in this class yet.
Most cited
By later US patents