Here's an interesting article on Garrett Brown, the inventor of the Steadicam. The article is not about film, but more about the process of invention and product innovation in business.
Article
http://knowledge.wharton.upenn.edu/index.cfm?fa=viewArticle&id=1352&specialId=48
Photos: 30 Years of Steadicam Development
http://knowledge.wharton.upenn.edu/index.cfm?fa=viewFeature&ID=1355
Article
http://knowledge.wharton.upenn.edu/index.cfm?fa=viewArticle&id=1352&specialId=48
Photos: 30 Years of Steadicam Development
http://knowledge.wharton.upenn.edu/index.cfm?fa=viewFeature&ID=1355