A. is called ‘the father of television’
B. was born in Scotland in 1888
C. was an inventor
D. all are correct
A. electrically-heated sock
B. air-filled shoe
C. television
D. a & b
A. 26
B. 35
C. 38
D. 40
A. 1923
B. 1926
C. 1928
D. 1929
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