Teacher Hotlists Hotlist Archive
http://www.wired.com/insights/2015/01/innovation-vs-invention/
https://www.archives.gov/preservation/products/definitions/products-services.html
https://www.uspto.gov/trademark
http://www.cpsc.gov/
http://www.ul.com/
http://www.business2community.com/product-management/eight-simple-steps-for-new-product-development-0560298#MC51V1WcplUP5soM.97
https://www.interaction-design.org/literature/article/apple-s-product-development-process-inside-the-world-s-greatest-design-organization