sentences:  Adox was a German camera and film brand of Fotowerke Dr. C. Schleussner GmbH of Frankfurt am Main, the world's first photographic materials manufacturer.In the 1950s it launched its revolutionary thin layer sharp black and white kb 14 and 17 films, referred to by US distributors as the 'German wonder film'.In the 1970s Dupont the new owners of the ADOX brand sold the recipes and machinery of the film (but not the brand name) to Fotokemika in Croatia who continued to produce the films according to the 1950s ADOX formulas under the Efke brand.