1871 - firm formed by Carl Grimme and Kaufmann A. Natalis who had been producing sewing machines independently of each other.
1890s - Grimme Natalis & Co. diversified and started producing calculating machines which were extremely successful;
1921 - became Grimme, Natalis & Co AG (Aktiengesellschaft, or corporation).
1927 - name changed to 'Brunsviga Maschinenwerke Grimme, Natalis & Co AG', and later to just "Brunsviga Maschinenwerke AG" (Brunsviga Machine Works)
1957 - Brunsviga entered into an agreement with Olympia Werke AG of Wilhelmshaven (part of the AEG group), which led ultimately to the company being absorbed into Olympia in 1959.