https://patents.google.com/patent/US20070157963A1/en


https://electrek.co/2018/05/07/tesla-patent-secret-solar-roof-tiles-camouflage/


https://patentscope.wipo.int/search/en/detail.jsf?docId=US236231623&tab=NATIONALBIBLIO&queryString=ALLNAMES%3A%28tesla%29&recNum=1&maxRec=2294