Now you Know

13186. Invention
Invention : periodic table
Year : 1871
Inventor : dmitry ivanovich mendeleyev
Country : russia.

13187. Invention
Invention : personal watercraft, motorized
Year : 1968
Inventor : bombardier, inc.
Country : canada.

13188. Invention
Invention : petroleum jelly
Year : 1870s
Inventor : robert chesebrough
Country : us.

13189. Invention
Invention : phonograph
Year : 1877
Inventor : thomas alva edison
Country : us.

13190. Invention
Invention : photocopying (xerography)
Year : 1937
Inventor : chester f. carlson
Country : us.

13191. Invention
Invention : photography
Year : 1837
Inventor : louis-jacques-mande daguerre
Country : france.

13192. Invention
Invention : photography, instant
Year : 1947
Inventor : edwin herbert land
Country : us.

13193. Invention
Invention : play-doh
Year : 1956
Inventor : noah w. & joseph s. mcvicker
Country : us.

13194. Invention
Invention : plow, steel
Year : 1836
Inventor : john deere
Country : us.

13195. Invention
Invention : pocket watch
Year : c. 1500
Inventor : peter henlein
Country : germany.

13196. Invention
Invention : polyethylene
Year : 1935
Inventor : eric fawcett, reginald gibson
Country : uk.

13197. Invention
Invention : polygraph (lie detector)
Year : 1921
Inventor : john a. larson
Country : us.

13198. Invention
Invention : polyvinyl chloride (pvc)
Year : 1872
Inventor : eugen baumann
Country : germany.

13199. Invention
Invention : post-it notes
Year : mid-1970s
Inventor : arthur fry (3m)
Country : us.

13200. Invention
Invention : potato chips
Year : 1853
Inventor : george crum
Country : us.

13201. Invention
Invention : printing press, movable type
Year : c. 1450
Inventor : johannes gutenberg
Country : germany.

13202. Invention
Invention : prozac
Year : 1972
Inventor : ray w. fuller, bryan b. molloy, david t. wong
Country : us.

13203. Invention
Invention : radar
Year : c. 1904
Inventor : christian hulsmeyer
Country : germany.

13204. Invention
Invention : radio
Year : 1896
Inventor : guglielmo marconi
Country : italy.

13205. Invention
Invention : radio, car
Year : early 1920s
Inventor : william p. lear
Country : us.

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