CHE109512206Dorfstrasse 20, 4914 Roggwil
Martin Siegenthaler Dipl. Architekt ETH/SIA is a Swiss Einzelfirma based in Roggwil, registered in the commercial register.▍
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Company facts reflect public commercial-register data. Officer and relationship data is derived from published register text. Register data as of 4 July 2026.
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