Patent No. EP4137444 (titled "Locking Device For Electrode Transfer Cart, And Electrode Transfer Cart Comprising Same") was filed by LG Energy Solution on Nov 24, 2021. The application was issued on Sep 10, 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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