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…
Coolidge was one of the most important innovators of the 20th century in his field. Coolidge developed the ductile tungsten filament used in lightbulbs, fluorescent…
On August 3rd, 1874, a Canadian patent for an “Electric Light” was issued to inventors Dr. Henry Woodward and Mathew Evans, of Toronto, Ontario. They…
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