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ORIGINAL PRINTED PATENT APPLICATION NUMBER 3,782 FOR IMPROVEMENTS IN BOARDS WITH PREPARED WRITING SURFACES FOR SCHOOL AND GENERAL USE, THE INVENTION BEING ALSO APPLICABLE FOR OTHER PURPOSES, SUCH AS DOOR PANELS, RAILWAY CARRIAGE ROOF LININGS, AND WALL DECORATIONS. (1909).
Author: William inventor Simpson   ISBN: B000XXS6OG   /   Hardcover Publisher: HMSO   /   1909
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ORIGINAL PRINTED PATENT APPLICATION NUMBER 18,267 FOR IMPROVEMENTS IN OR RELATING TO CHEESE PRESSES. (1909)
Author: Francis William inventor Simpson   ISBN: B000XY76NC   /   Hardcover Publisher: HMSO   /   1909
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ORIGINAL PATENT APPLICATION NUMBER 11,317 FOR AUTOMATICALLY LIGHTED APPARATUS FOR THE RECEPTION OF COIN AND THE EXHIBITION AND DELIVERY OF PHOTOGRAPHS OR THE LIKE IN EXCHANGE THEREFOR.
Author: William Speirs inventor Simpson   ISBN: B000XUPX0E   /   Hardcover Publisher: HMSO   /   1887
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ORIGINAL PRINTED PATENT APPLICATION NUMBER 11,833 FOR IMPROVEMENTS IN CONNECTION WITH GAS COOKING UTENSILS. [1910]
Author: William Speirs inventor Simpson   ISBN: B000XWKHUS   /   Hardcover Publisher: HMSO   /   1910
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ORIGINAL PRINTED PATENT APPLICATION NUMBER 16,969 FOR IMPROVEMENTS IN APPLIANCES FOR INDICATING THE QUANTITY OR LEVEL OF WATER IN RADIATORS FOR MOTOR VEHICLES, VESSELS, OR THE LIKE. (1910)
Author: William James William Peter Simpson inventors Saunders   ISBN: B000XXMYOY   /   Hardcover Publisher: HMSO   /   1910
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ORIGINAL PRINTED PATENT APPLICATION NUMBER 21,596 FOR IMPROVEMENTS IN TRAPS FOR MICE AND OTHER ANIMALS. [1910]
Author: Francis William inventor Simpson   ISBN: B000XXO9M4   /   Hardcover Publisher: HMSO   /   1910
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