On August 16, 1898, Edwin Prescott was awarded a patent for the loop-de-loop Roller Coaster having a section of vertical loop. Prescott operated his dual-tracked…
On Aug. 13, 1889 William Gray of Hartford, Connecticut, received a patent for a coin-operated telephone. Soon he formed the Gray Telephone Pay Station Company…
On August 12, 1851, Isaac M. Singer was granted a patent for the first practical and efficient sewing machine. His sewing machine was revolutionary, having…
On August 9, 1898, Rudolf Diesel was granted patent #608,845 for an “internal combustion engine” which was named after him “the Diesel engine”. There was…
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