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Although hearing aids in some form or fashion such as the ear trumpet were developed in previous years, the first electric hearing aid was invented by Miller Reese Hutchison in 1902. [86] 1902 Postage meter. A postage meter is a mechanical device used to create and apply physical evidence of postage, or franking, to mailed matter.
The year 1902 in science and technology involved some significant events, listed below. Aeronautics. May 15 ...
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War
Rapid (1902-1909) Studebaker Electric (1902-1912) 1903 ... (No civilian vehicles were made this year) 1944. Willys-Overland CJ-1 (1944) (Scarce Documentation)
August 10 – James McMillan, Canadian-born U.S. Senator from Michigan from 1889 to 1902 (born 1838) September 26 – Levi Strauss, founder of Levi Strauss & Co. (born 1829) October 26 – Elizabeth Cady Stanton, suffragist (born 1815) November 22 – Walter Reed, Army physician (born 1851) [17]
[45] A more modern and effective polygraph machine would be invented by John Larson in 1921. [46] 1902 – Georges Claude invented the neon lamp. He applied an electrical discharge to a sealed tube of neon gas, resulting in a red glow. Claudes started working on neon tubes which could be put to use as ordinary light bulbs.
1902 was a common year starting on Wednesday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1902nd year of the Common Era (CE) and Anno Domini (AD) designations, the 902nd year of the 2nd millennium, the 2nd year of the 20th century, and the 3rd year of the 1900s decade. As of the start of 1902, the ...
Willis Haviland Carrier (November 26, 1876 – October 7, 1950) was an American engineer, best known for inventing modern air conditioning.Carrier invented the first electrical air conditioning unit in 1902.