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The patent EP4230298 was granted to Hengst on Jan 29, 2025. The application was filed on Jun 29, 2022 under application number EP22182008A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
A gas cleaning device comprising a filter cartridge with a filter medium and at least a first filter terminal, and a gas ionizer with at least a first ionizer terminal, wherein the filter cartridge provides an electrical connection between the first duct terminal and the first ionizer terminal, and the first ionizer terminal is electrically connected to the first duct terminal via the first filter terminal, such that removing the filter cartridge automatically disconnects the first ionizer terminal from the power source.

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