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What's new with our family of companies. Interface Group, LLC and its associated companies are a family of companies dedicated to the online industry. The companies were incorporated in their present form in Minnesota, USA in 1994. Email and information services companies owned and operated by the principals of the Interface Group date back to 1985. The Interface Group, LLC and the associated companies are wholly owned by Ronald H. Berry, Donald A. Fitzwater, and Kenneth L. Henningsen .