When was the first American clock invented?
The first American clock was invented in 1761 by Benjamin Banneker when he was only thirty years old.
When was Aspartame discovered?
In 1965, a researcher Mr. James Schlatter discovered aspartame accidentally at G.D. Searle and Company in the United States. Aspartame is a low-calorie sweetener that is used as a substitute… Read more »
When was the first Dishwasher invented?
In the year 1850, in the United States the first manual dishwasher was invented and patented by an American woman in Shelbyville, Illinois, in 1886 Joel Houghton.
When was the modern fire extinguisher invented?
British Captain George William Manby invented the modern fire extinguisher in the year 1818. Francois Carlier of France patented the first soda-acid extinguisher in 1866. In 1881, Read & Campbell… Read more »
When were the first prepaid Phone Cards invented?
In the year 1975, first prepaid phone cards, telephone cards or calling card were invented by SIDA Company and the first prepaid telephone cards was produced in Italy in 1976.
When was plastic soda bottle invented?
In 1967, Nathaniel Wyeth invented the plastic soda bottle but it had certain defects as the bottle could explode when it was kept in the refrigerator. After that he found… Read more »
When was Popsicle invented?
Frank Epperson invented Popsicle accidentally in the year 1905 in San Francisco when he was only eleven year old. In a mixture of powdered soda and water he left a… Read more »
When was the first Compound Microscope invented?
The Dutch lens maker, Zacharias Janssen in 1595 invented the first compound microscope. His microscope had lens at each end that consisted of two tubes that slid within one another…. Read more »
When were Chocolate Chips invented?
In the year 1937, Ruth Graves Wakefield of the Toll House Inn in Whitman town, Massachusetts invented the chocolate chips. In a cookie recipe by adding a semi sweet Nestle… Read more »
When was Braille system invented?
In the year 1829, the Braille system was invented by a blind Frenchman, Louis Braille for the blind persons to read and write. It is a system of coded raised… Read more »