A leading light of Britain’s postwar industrial design went out this week as Sir Kenneth Grange died at the age of 95. From pens to chairs to lamps via trains and taxis – Grange left his indelible mark across decades of design. For some, he was the most influential industrial designer you’ve never heard of, although he was knighted for services to design and created some of the most iconic everyday products ever made. Kenneth Grange was the very definition of a renaissance man. Over his 70-year career he designed hundreds of products for dozens of global brands. He was such a prolific designer…