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Improvements in the mechanism or apparatus employed for locking, actuating and setting in motion railway points and signals, also in the apparatus for regulating or governing the action and movement of such points and signals in relation to each other. Being British Patent Number: 1221 published 27 April 1867


Editorial: London, Eyre and Spottiswood, published at the Great Seal Patent Office c, 1867
Condición: Good Sin Encuadernar
Librería: M.A. Stroh. (London, Reino Unido)

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First Edition. Original Printed patent disbound with printed front blue wrapper present but not the back wrapper (both often lacking in early patents) About 27cm by 18 cm some wear and tear due to the disbinding. N° de ref. de la librería 1835

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Título: Improvements in the mechanism or apparatus ...

Editorial: London, Eyre and Spottiswood, published at the Great Seal Patent Office c

Año de publicación: 1867

Encuadernación: No Binding

Condición del libro: Good

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