H1B non-PP to PP Timeline

贡献个时间线，学校教职 ，WAC20193*，七月实在等不及就升了PP，没想到第二天就approve了

5/15/2020 non-PP filed
06/12/2020 receipt received
7/12/2020 upgrade to PP sent
7/14/2020 USCIS received PP request
7/15/2020 case approved