Margaret E. Knight: Female Inventor | 7 Days Of Genius | MSNBC

Her invention changed the retail landscape. » Subscribe to MSNBC: About: MSNBC is the premier destination for in-depth analysis of daily headlines, insightful political commentary and informed perspectives. Reaching more than 95 million households worldwide, MSNBC offers a full schedule of live news coverage, political opinions and award-winning documentary programming -- 24 hours a day, 7 days a week. Connect with MSNBC Online Visit : Find MSNBC on Facebook: Follow MSNBC on Twitter: Follow MSNBC on Google : Follow MSNBC on Instagram: Follow MSNBC on Tumblr: Margaret E. Knight: Female Inventor | 7 Days Of Genius | MSNBC