I remember that but wasn't sure as of date either,I checked on it and came up with this,

In the late 1950s, consumers were starting to place more value on time and time spent at the service meat counter. The meat industry started migrating from the service meat counter to a self-service meat case. There were no standards for cut names, and consumers were confused. so meat pimp you were off a few years but in the ball park lol

In the late 1960s, the industry began utilizing more technology, and scanning was introduced for fixed-weight grocery products.  Scanning came about by developing a system of lines and spaces that could be read by a scanner and then interpreted into numbers to identify a product.

 In 1973 on recommendations of the Industrywide Cooperative Meat Identification Standards Committee (ICMISC), Uniform Meat Identity Standard (URMIS) was established to implement standardization of meat cuts and end consumer confusion.  Over the years, URMIS has become the standard used in the meat industry to identify and label meat cuts.

any one interested in this, here is a link  http://www.meattrack.com/History.php