Hasler
of Berne, Switzerland
1850s Gustav Adolf Hasler joined the Swiss Federal Telegraph Workshop and was soon regarded as the actual head of the workshop because of the absence of his boss. Much of the telegraph apparatus produced was supplied to other customers than the Swiss Federal Telegraph Administration.
1865 the Swiss telegraph workshop was privatised, owned by Gustav Adolf Hasler and Heinrich Albert Escher, director of the Swiss Federal Mint in Bern.
1867 Introduced telegraphic water level indicators and novel meteorological apparatus.
1870s Expansion of interests with the invention of the telephone; telephones were developed on the Bell principle.
1879 Hasler took over full control of the business.
1887 Incorporation of Hasler A.G. Bern
1911 Societe Hasler S.A., formerly the Telegraph Works, of Switzerland patented a "contact for rail".
1914 The company showed its diverse range of activity at the state exhibition in Bern: telegraph and telephone machines, meteorological and hydrological measurement and registration apparatus, safety and signalling apparatus for railways, counters and speedometers for railways, cars and aircraft as well as letterbox systems.
Early 1920s: Started to supply large telephone switch systems under licence from L. M. Ericsson
1925 Introduced small switch offices for rural areas.
1931 Hasler provided its own design of switches for large city networks.
1991 Joined with S. A. Secheron