Patent No. EP4293213 (titled "Sound-Attenuating Heat Exchangers And Methods Of Exchanging Heat And Attenuating Sound Within Sound-Attenuating Heat Exchangers") was filed by The Boeing on May 2, 2023. The application was issued on Dec 20, 2023.

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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