Patent No. EP3769154 (titled "Optical System And Imaging Apparatus") was filed by Ricoh on Mar 19, 2019. The application was issued on Aug 6, 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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