<P> Some are made without the wavy rigid side and instead are smooth and curved . They are made this way to help with the grip factor and they stay closer and more tightly attached to the hair that it is pinned to . </P> <P> Bobby pins may also be padded in order to avoid creasing the hair . </P> <P> The bobby pin was invented by Luis Marcus, a San Francisco--based cosmetics manufacturer, after World War I and came into wide use as the hairstyle known as the "bob cut" or "bobbed hair" took hold . He originally sold two handmade bobby pins for 35 cents . Although Marcus thought about naming the pin after himself, he named them bobby after the bobbed hairstyle . A trademark on the term "bobbie pin" was held for some decades by Smith Victory Corporation of Buffalo, New York . A trademark infringement claim made by Smith Victory Corporation against Procter & Gamble regarding their naming their home permanent product Bobbi was settled in the 1950s by a payment to Smith Victory Corporation by P&G . The term is now in common usage and therefore is no longer a valid trademark . Similarly, the British "kirby grip" is derived from the trademark Kirbigrip, used by a Birmingham manufacturer of such pins, Kirby, Beard & Co. Ltd . </P>

Where did the name bobby pin come from