Patent No. EP3524821 (titled "Vacuum Pump And Rotary Cylindrical Body Installed In Vacuum Pump") was filed by Edwards Japan on Aug 9, 2017. The application was issued on Aug 14, 2019.

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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