Burroughs Adding Machine Company
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Mergers, Acquisitions & Divestitures
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The history of Burroughs is a history of mergers and acquisitions. In the early part of the 20th century, the competition in the adding machine industry was intense.  New inventions were everywhere and companies sprang into existence to market the products.
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The following is a list of the mergers, acquisitions, and divestitures that marked the history of Burroughs.  Burroughs literally owes its marketplace success to this activity.

Company                                                                     Location                               Date


Acme Carbon and Ribbon Company, Ltd.                         Toronto, Canada                          Acquired in 1949
Balbik Systems Limited                                                         Stroud, England                           Acquired in 1970

Burroughs Adding and Registering Company, Ltd.,        Nottingham, England                 Acquired in 1908
Charles Hadley Company                                                       Los Angeles, California              Acquired in 1955
Control Instrument Company                                               New York, NY                              Acquired in 1951
Convergent Technologies                                                       Santa Clara, CA                           Acquired in 1988
Delta Carbon and Ribbon Company Limited                    Aylesbury, England                    Acquired in 1970

ElectroData Company                                                             Pasadena, CA                              Acquired in 1956
Graphic Sciences, Inc.                                                             Danbury, CT                                Acquired in 1975
Graftek Graphics Technology Corp.                                     Boulder, Colorado                      Acquired in 1984
Haydu Brothers                                                                        Plainfield, NJ                              Acquired in 1954
Joseph Cogan, Associates                                                       ?                                                     Acquired in 1984
Memorex Corporation (see Divestitures below)                Santa Clara, CA                          Acquired in 1981
Midwest Systems Group                                                         ?                                                    Acquired in 1982
Mittag & Volger, Inc.                                                               Park Ridge, NJ                           Acquired in 1949
Moon Hopkins Billing Machine Company                         ?                                                     Acquired in 1921
Paramax                                                                                    Canada                                          Acquired in 1986
Pike Adding Machine Company                                           Orange, NJ                                  Acquired in 1909
Redactron Corporation                                                          Hauppauge, New York              Acquired in 1976
Sperry Corporation                                                                 Blue Bell, PA                               Acquired in 1986
Speytec Limited                                                                       Croydon, United Kingdom       Acquired in 1969

System Development Corporation                                      Camarillo, CA                              Acquired in 1980
Systems Research, Inc (SRI)                                                 San Jose, CA                               Acquired in 1981
Takachiho Burroughs Company, Ltd.                                 Japan                                            50% stake in 1973

Timplex                                                                                      ?                                                    Acquired in 1987
Todd Company                                                                        Rochester, NY                             Acquired in 1955
Universal Adding Machine Company                                 St. Louis                                       Acquired in 1908
Divestitures

Memorex consumer business sold to Tandy Corporation.                                                      Divested in 1982
Memorex Media, Communication and IBM plug campatible Sales and Services businesses
   sold in leveraged buyout as Memorex International BV for $550m.                                  Divested in 1986
Memorex storage business sold to Sequel.                                                                                  Divested in 1989
(Thanks to Tom Gardner for the Memorex information)
​Unisys South Africa (Pty) Ltd.                                                                                                        Sold in 1988
Sperry Aerospace and Microwave Operations                                                                            Sold in 1986

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