Maryland while flight simulators were produced in Binghamton, New York. For several years in the 1970s, Singer set up a national sales force for CAT phototypesetting machines (of UNIX troff fame) made by another Massachusetts company, Graphic Systems Inc. This division was purchased by Wang Laboratories in 1978. In 1987, corporate raider Paul Bilzerian made a "greenmail" run at Singer, and ended up owning the company when no "White Knight" rescuer appeared. To recover his money, Bilzerian sold off parts of the company. Kearfott was split, the Kearfott Guidance & Navigation Corporation was sold to the Astronautics Corporation of America in 1988 and the Electronic Systems Division was purchased the Plessey Company in 1988 and renamed Plessey Electronic Systems (and then acquired by GEC-Marconi in 1990, renamed GEC-Marconi Electronic Systems, and later incorporated into BAE Systems). The four Link divisions developing and supporting industrial and flight simulation were sold to Canadian Avionics Electronics (CAE) and became CAE-Link. The nuclear power simulator division became S3 Technologies, and later GSE Systems, and relocated to Eldersburg, MD. The Sewing Machine Division was sold in 1989 to Semi-Tech Microelectronics, a publicly traded Toronto-based company. 20th century Sales and profits grew until the 1940s. The market was affected in several ways. The USA market matured after WWII. Japanese manufacturers ate into the market with zig-zag sewing machines. Under the leadership of Donald P. Kircher, Singer diversified into markets such as office equipment, defense, and aerospace. Revenue of which 90% of revenue from sewing machines was reduced to 35% after diversification. In 1978 Singer moved its HQ from Rockefeller Plaza to Stamford, Conn. This relocation moved 430 jobs to the new location. During the 1980s Singer sewing machine markets were being hit with Japanese machines and European brands including Bernina, Pfaff, and Viking. In 1986, the original Singer company spun off its sewing machine business under the name SSMC. In 1989 Semi-Tech Global purchased SSMC renaming SSMC back to Singer. Semi-Tech Global incorporated Singer into Singer N.V. based in Netherlands Antilles owned by the Hong Kong holding company. Singer N.V. filed bankruptcy in 1999 and was acquired by Kohlberg & Company. In 1997, Singer (Singer N.V.) US operations moved its consumer products to LaVergne, Tennessee. This location also served its wholesale distribution of sewing machines and parts. In 2006 The parent company of Singer - Kohlberg & Company, acquired Husqvarna and Pfaff brands. This merged the