• All sections
• F - Mechanical engineeringlightingheatingweaponsblasting
• F28D - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contactheat storage plants or apparatus in general
• F28D 7/08 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag

Patent holdings for IPC class F28D 7/08

Total number of patents in this class: 286

10-year publication summary

Principal owners for this class