Yahoo Web Search

Search results

    • Calendar of Patent Records - Nature

      Nature· 3 days ago

      James Thompson's invention, for which a patent was granted on July 6, 1846, utilises this principle to increase the power of a steam-engine, two oppositely disposed levers being fixed to the ...

    • Hygiene—Personal and Environmental 1 - Nature

      Nature· 3 days ago

      On a more leisurely and comprehensive review than was possible at the congress itself, one cannot but be struck with the small amount of irrelevant matter. School hygiene, involving, directly ...