- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 21/32 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight bent in U-loop form disposed horizontally in abutting connection with upright headers or rising water mains
Patent holdings for IPC class F22B 21/32
Total number of patents in this class: 0
10-year publication summary
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Principal owners for this class
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