Logos and Branding (The Coca-Cola Bottle)

I decided it was about time I looked into how well known famous companies and institutions used logos and branding to further themselves, I find it extremely interesting how big companies such as McDonald's, Coca-cola, pepsi, walkers, and nike have branded them selves well enough that they can be identified subconsciously. 

One fact i find extremely interesting is that of a coca cola bottle, as you can see in the image below throughout time the bottle of coca cola has hardly changed since 1915, meaning that even when the name is taken off the bottle it can still be strongly identified and the product still known.