Wikipedia
Applicon, Incorporated was one of the first manufacturers of Computer Aided Design and Manufacturing ( CAD/CAM) systems. It was co-founded in 1969 in Bedford, Massachusetts by Fontaine Richardson, who earned a Ph.D. degree in computer science from the University of Illinois in 1968, and by Gary Hornbuckle, who had received a Ph.D. from UCB. Hornbuckle was President of Applicon until it was sold to Schlumberger.
During the 1970s and early 1980s, the company had its headquarters and R&D facility in Burlington, Massachusetts, while its manufacturing facility was in Billerica, Massachusetts. Applicon was acquired by Schlumberger in 1980, at which point Richardson and Hornbuckle left the company. At the time, Applicon had over $100 million in annual revenue.
In 1986 Schlumberger management combined its Applicon division with another entity which it had acquired, Manufacturing Data Systems, Inc. (MDSI), to create the Schlumberger CAD/CAM division, siting its main office in Ann Arbor, Michigan. In 1993, Schlumberger sold this division to Gore Enterprises, and in turn Gore sold it in 1999 to UGS Corp., a 1996 spin-off of Electronic Data Systems, which was later acquired by Siemens AG.