Editing System Development Corporation (section)

=== Ownership ===
In 1981, SDC was sold by its board of directors to the [[Burroughs Corporation]].

In 1986, Burroughs merged with the [[Sperry Corporation]] to form [[Unisys]], and SDC was folded into Unisys Defense Systems.

In 1991, Unisys Defense Systems was renamed Paramax, a wholly owned subsidiary of Unisys, so that it could be spun off to reduce Unisys debt.<ref>[http://articles.janes.com/articles/International-Defence-Review-93/PARAMAX-SYSTEMS-CORPORATION-DIVISION-OF-UNISYS-FREDERICK-F-JENNY.html Defense & Security Intelligence & Analysis: IHS Jane's | IHS] {{Webarchive|url=https://web.archive.org/web/20120509204037/http://articles.janes.com/articles/International-Defence-Review-93/PARAMAX-SYSTEMS-CORPORATION-DIVISION-OF-UNISYS-FREDERICK-F-JENNY.html |date=2012-05-09 }}. Articles.janes.com. Retrieved on 2014-02-21.</ref>

In 1995, Unisys sold Paramax to the [[Loral Corporation]], although a small portion of it, containing some projects that had originated in SDC, remained with Unisys.

In 1996, Loral sold Paramax to [[Lockheed Martin]].

In 1997, the Paramax business unit was separated from Lockheed Martin under the control of Frank Lanza (who had been Loral's president and CEO); and became a subsidiary of [[L-3 Communications]].

In 2019, L-3 Communications merged with [[Harris Corporation]] to form [[L3Harris Technologies]].