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1.
PIANO
1709
2.
CONTACT LENSES
1965
3.
TELEVISION
1925
4.
VACCINATION
1796
5.
MATCHES
1827
6.
ASPIRIN
1882
7.
THERMOMETER
1591
8.
DYNAMITE
1866
9.
X-RAYS
1895
10.
LASER
1958
11.
BLOOD TRANSFUSION
1625
12.
POSTAGE STAMP
1842
13.
MOTOR CAR
1884
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