Patent No. EP4487657 (titled "Furnace Power Supply Apparatus, System For The Power Supply Of An Electric Arc Furnace Or A Submerged Arc-Resistance Furnace, Electric Arc Furnace Or Submerged Arc-Resistance Furnace And Operating Method") was filed by SMS Group on Mar 4, 2023. The application was issued on Jan 8, 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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