Question

when did scientist willem j.kolff born ....​

Answer 1

Answer:

Willem J. Kolff was born on

February 14 th in the year 1911

hope this helps..

Answer 2

Answer:

Feb. 14, 1911

Explanation:

Willem Johan Kolff, Dutch-born American physician (born Feb. 14, 1911, Leiden, Neth.—died Feb. 11, 2009, Newtown Square, Pa.), was a pioneering biomedical engineer who invented the kidney dialysis machine and led the medical team that on Dec. 2, 1982, implanted the first artificial human heart in Barney Clark.