Product Placement Blog ➞ 3M3M Littmann Stethoscope in The Good Doctor S04E17 “Letting Go” (2021)May 18, 2021 Sergey TV Show Hi! On Tuesday, May 18, I watched a TV Show and product placement was spotted: 3M Littmann Stethoscope in The Good Doctor S04E17 “Letting Go” (2021).