GB189422013A - Improvements in Apparatus for Imparting a Predetermined Temperature to Liquids for Use in Developing Photographic Plates, and for other purposes.
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Improvements in Apparatus for Imparting a Predetermined Temperature to Liquids for Use in Developing Photographic Plates, and for other purposes.
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Charles Edward Hearson
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GB189422013D1894-11-141894-11-14Improvements in Apparatus for Imparting a Predetermined Temperature to Liquids for Use in Developing Photographic Plates, and for other purposes.
ExpiredGB189422013A
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