Patent No. 586,193
Transmitting Electrical Signals
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In 1895 Italian
inventor Guglielmo Marconi built the
equipment and transmitted electrical
signals through the air from one end of
his house to the other, and then from the
house to the garden. These experiments
were, in effect, the dawn of practical
wireless telegraphy or radio. |
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Today
On January 1, 2000, the worldwide
penetration of wireless service was approximately 400
million users (7.5%)
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Tomorrow
Expected to approach 2 billion
users (32%) worldwide by the year 2010 (half on 3G systems)
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