Videogames.com has a timeline of videogames. What I found particularly interesting was how long some company names have been around. For example, "In the early '50s, Maurice's son Leonard creates a leather-cutting machine, and the company, which soon trades under the acronym COLECO (short for Connecticut Leather Company), begins selling leather craft kits."

Another one: "(1945) From their garage workshop, Harold Matson and Elliot Handler produce picture frames. They come up with the name "Mattel" by combining letters from their names. Elliot uses the scraps from the picture frames to begin a side business making doll-house furniture."

And finally: "(1954) The name SEGA, short for SErvice GAmes, is stamped on the games that Rosen produces, and eventually Rosen adopts it as his company name." (Link from pcjm)