Patent No. EP4286028 (titled "Filter Head Assembly Having A Threaded Bayonet Connector Adapter With A Position Tolerance Improving Retainer Ring") was filed by Mannhummel on May 16, 2023. The application was issued on Jul 2, 2025.

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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