Year places an invention in the year it was actually patented or first demonstrated. Wikipedia records that "in 1876, Alexander Graham Bell was the first to be granted a United States patent" for the telephone. Browsing by year sets an invention in the wider timeline of technology history.
Facts
Comparison
Main Engineering Branch 1920s
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Sources
1. Wikipedia: Engineering
WikipediaIntroduction, traditional disciplinesQuote, Introduction, traditional disciplines
The traditional disciplines of engineering are civil, mechanical, electrical, and chemical.
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