Assertion: watt's steam engine | /r/HasProperty | introduced by thomas newcomen
Facets:
value: in 1712
type: TEMPORAL
Source sentences:
text: The first steam engines, introduced by Thomas Newcomen in 1712, were of the "atmospheric" design.
text: James Watt (January 30, 1736—August 25, 1819) was a Scottish inventor, mechanical engineer, and chemist whose steam engine patented in 1769 greatly increased the efficiency and range of use of the early atmospheric steam engine introduced by Thomas Newcomen in 1712.