Alphonse Poitevin (Conflans-sur-Anille, 1819 – Conflans-sur-Anille, 1882) was a French chemist, photographer and civil engineer who discovered the light–sensitive properties of bichromated gelatin and invented both the photolithography and collotype processes.
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| Name | Poitevin, Alphonse |
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| Date of birth | 1819 |
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| Date of death | 1882 |
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