By now the form factor of the modern drip-filter coffeemaker is so embedded in our minds that it is difficult to see how revolutionary the KF 20 was. Up until the 1970s people had been brewing, steeping, percolating, even siphoning coffee using whatever assortment of gadgets their parents had. Here Seiffert had reconciled the technological/mechanical requirements of creating coffee--heating the water, steeping it, filtering finished product into a vessel, keeping that vessel heated--into a tidy and sleek cylindrical shape. The process was rendered largely invisible, with the workings hidden within the body and the elegant metal pipe supporting the "water tower" containing the wiring for the upper and lower heating elements.

Elisha Cohen

Source: Braun-1972-KF-20.jpg