Specifications of patents for improvements in the steam engine and also for a new method of copying letters, & c.
Subtitle: to which is prefixed the original patent of 1769
By: by the late James Watt... ; edited by his son James Watt...in whose possession are the the original deeds.
Contributors: Watt, James, 1769-1843.
Publisher: printed by John Weale
Published: 1848
Place of publication: London
Language: eng
Notes: In 2 vols.