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[[File:1958-10-Geha-Invoice-Front.jpg|thumb|upright|A 1958 invoce]]

[[File:1958-10-Geha-Invoice-Front.jpg|thumb|upright|A 1958 invoce]]

The company was founded in [[1918]] in Hanover by Heinrich and Conrad Hartmann, the name is short for ''Gebrüder-Hartmann'' (Hartmann brothers).<ref>Historical data was mainly taken from Werner Rüttinger's [http://www.ruettinger-web.de/geha-startseite.html site] dedicated to [[Geha]] fountain pen production.</ref> The company was founded specializing in the production of material for stationery, especially paper, blocks, carbonless papers and tapes, becoming in the 20s one of the market leaders in stationery postal sales.

The company was founded in [[1918]] in Hanover by Heinrich and Conrad Hartmann, the name is short for ''Gebrüder-Hartmann'' (Hartmann brothers). The company was founded specializing in the production of material for stationery, especially paper, blocks, carbonless papers and tapes, becoming in the 20s one of the market leaders in stationery postal sales.

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