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He spent his professional life in America, but Al Gross was born in Toronto.
The Canadian inventor turned a fascination with radio communication into a career that included inventing what became the pager in 1949.
Gross attempted to interest doctors in the device, which would allow them to be alerted immediately to patient emergencies, but they joked it would ruin their golf games.
Some 300 million pagers would be sold by the end of the last century.