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US962788A
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Photographic emulsion.
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GB190709855A
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Process for Producing an Emulsion of Phosphate of Silver.
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GB190700993A
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A Process for Preparing Paper for Photographic purposes.
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US916616A
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Photographic paper.
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US710019A
|
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Photographic emulsion.
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GB190209992A
|
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Process of Preparing Paper for Photographic Purposes.
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GB189827115A
|
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A Lighting Material for Photographic, Signalling, and kindred Purposes.
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GB189605637A
|
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Improvements in Means for Illuminating Objects for Photographic and other Purposes.
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