http://en.wikipedia.org/wiki/Cubicle
"The office cubicle was created by designer Robert Propst for Herman Miller, and released in 1967 under the name "Action Office II". Although cubicles are often seen as being symbolic of work in a modern office setting due to their uniformity and blandness, they afford the employee a greater degree of privacy and personalization than in previous work environments, which often consisted of desks lined up in rows within an open room.[1][2
Image of an office circa 1937: http://en.wikipedia.org/wiki/File:Photograph_of_the_Division...
I've never liked the open office layouts anyways. The two companies I worked for used it and it was tremendously noisy and so I usually did anything I could to avoid having to work in the office. Either by going to the cafeteria to work, or staying home. It made both of the teams I worked on very inefficient. The exact opposite goal it was meant to address.