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Louis Joseph Emmanuel & Jules Richard (inventors). Colardeau
Books by Louis Joseph Emmanuel & Jules Richard (inventors). Colardeau
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COMPLETE PRINTED PATENT APPLICATION NUMBER 12,912 FOR AN IM…
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Louis Joseph Emmanuel & Jules Richard (inventors). Colardeau
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![COMPLETE PRINTED PATENT APPLICATION NUMBER 12,912 FOR AN IMPROVED DEVICE FOR AUTOMATICALLY CONTROLLING THE OPERATION OF PHOTOGRAPHIC SHUTTERS. [1910]](https://www.ebooknetworking.net/books/noim.jpg)