Hillman Group Inc., one of Cincinnati's largest private companies, has agreed to acquire a company that specializes in self-service key duplicating kiosks. Financial terms of Hillman's deal to purchase Minute Key Holdings Inc. were not disclosed and is subject to regulatory approval. The sale is expected to combine Hillman's full-service key cutting platform with Minute Key's self-service option to be backed by Hillman's digital key backup and retrieval technology platform KeyHero. Boulder,...