https://padlet.com/invent/4 en-us 2022-05-18 01:46:38 UTC 2022-05-18 03:11:51 UTC hello@padlet.com https://padlet.net/icons/png/1f4a1.png invent https://padlet.com/invent/4/wish/414019491 http://padlet.com/invent/4

]]> 2019-11-20 14:41:16 UTC https://padlet.com/invent/4/wish/414019491 https://padlet.com/invent/4/wish/2188698871 음료수를 마시고 혈액 검사를 한 예처럼 발명품의 효능을 과학적으로 증명한 사례는 무엇이 있을까?]]> 2022-05-18 02:51:13 UTC https://padlet.com/invent/4/wish/2188698871