| Patent Number | Title | Applicant | Opposition Date |
|---|---|---|---|
| EP3207315 | Adaptive Defrosting Of An Air Treatment System | SWEGON OPERATIONS AB | Dec 15, 2020 |
| EP2546581 | System Comprising Air-To-Air-Heat Exchanger For Heat Recovery And Method For Controlling Defrosting Thereof | IV PRODUKT AB | May 29, 2018 |
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