All of these technologies were based on earlier technologies developed for decades, so crediting the inventor and noting the year is a bit of a lost cause (as you can see), but it gives you a sense of how old these things are. Next time you drive to work making deals on your Bluetooth and get into a well-lit elevator playing soft Muzak, realize just how much we stand on the shoulders of giants. Can you think of inventions I missed? If so, share your thoughts in the comments below. And please like us on Facebook!