Rare Buenilum Triple Buffet Food Warmer Server Electric Mid Century Modern Posted on November 11, 2023 by admin Buehner-Wanner produced Buenilum from the 1940s through the 1960s. Frederick Buehner had developed a unique formula for aluminum which he trademarked as Buenilum in 1933. This set bears that mark. It will serve three separate dishes.