1901  First hydraulic fruit press with a 600 bar high pressure pump.
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1904  Jean Bucher (-Guyer) (1875-1961) took over the company's management.

1918  Company renamed "Maschinenfabrik Jean Bucher-Guyer". 150 employees.

1921  The "Luna" centrifugal slurry pump found a ready market in Switzerland and abroad.
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1923  "Maschinenfabrik Johann Bucher" established in Griessen, Südbaden.

1931  The "Mostfritz" fruit press won new customer groups.