Scotsman John Logie Baird demonstrated the color television transmission in London for the first time.
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American inventor Eli Whitney was granted a patent for a ground-breaking new type of cotton gin.
The first sewing machine was patented in the US.
J. L. Love patented his pencil sharpener in the US.
The Soviet Union started mass producing the AK-47 assault rifle.
Thomas Edison demonstrated his hand-cranked phonograph for the first time.
