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Bertram (inventor). Norton
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🇺🇸 United States
ORIGINAL PRINTED PATENT APPLICATION NUMBER 5,898 FOR IMPROV…
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Bertram (inventor). Norton
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![ORIGINAL PRINTED PATENT APPLICATION NUMBER 5,898 FOR IMPROVEMENTS IN APPARATUS FOR WASHING COAL OR OTHER SUBSTANCES. [1910]](https://www.ebooknetworking.net/books/noim.jpg)