Johannes Grubenmann
Johannes Grubenmann was a member of the Swiss Grubenmann family who were known as carpenters and civil engineers in the eighteenth century. He specialized in constructing church towers, turret clocks and bridges.
Johannes Grubenmann was a member of the Swiss Grubenmann family who were known as carpenters and civil engineers in the eighteenth century. He specialized in constructing church towers, turret clocks and bridges.