Comcast Corp.'s proposed takeover of Time Warner Cable would give the Philadelphia company nearly 30 million cable TV and high-speed Internet subscribers. The merger would consolidate Comcast's information pipeline serving the East and West coasts. Here are major milestones for the company:
1963: Comcast springs to life when Ralph Roberts buys American Cable Systems, a cable television provider with 1,200 customers in Tupelo, Miss.
1968: The company buys its first franchise of Muzak — the background music company — and begins adding franchises throughout the country.
1972: Comcast becomes a publicly traded...