Alexander Yeh filed and held a Fidget product patent to help people with better focus, attention, calming, and active listening. He is also the founder of the e-commerce business: ...visualizza altroAlexander Yeh filed and held a Fidget product patent to help people with better focus, attention, calming, and active listening. He is also the founder of the e-commerce business: mobicases.net. In addition, Alexander is a music composer and enjoys piano playing.visualizza meno