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Medtronic is sharing its portable ventilator design specifications and code for free to all | TechCrunch
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Used NELLCOR PURITAN BENNETT PB 840 Ventilator - 2 Available Ventilator For Sale - DOTmed Listing #3619792:
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4-840120DIUU-02 Puritan Bennett - Covidien 840 VENTILATOR : PartsSource : PartsSource - Healthcare Products and Solutions
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