Once a burdensome chore for each family to produce for dinner, the art of making superior butter became a delightful practice, and each neighborhood soon developed butter-making households that had such an expertise at making butter. Their trademarked butter pads, more commonly known as butter molds or butter prints when carved, were sought eagerly by the entire community. Thereby, wood craftsmen carved distinctive wooden butter prints so that each family’s butter mold would have a unique design separating its goodness from any other butter churner‘s product, either by its salt or the quality of the contented cows who supplied the creamrke

Source: A Look Back in History: Village Creameries Part 2, Trademarked butter molds