A listing of
famous and not-so-famous historical innovations that
occurred in
Science and Technology during this month. |
April |
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1908-Abraham Harold Maslow was a U.S.
psychologist who believed that man has a natural drive to healthiness,
and developed this into his self-actualization theory of psychology born |
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1875-Walter Percy Chrysler was an American
industrialist and inventor who founded his own company, Chrysler Motors
born in Wamego, Kansas |
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1827-Ernst Florens Friedrich Chladni German
physicist, known as the "father of acoustics" for his mathematical
investigations of sound waves. |
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1821-Linus Yale Jr. inventor of the
Yale lock born in Salisbury, New York
1950-Patent # 2,502,488 issued to J. Bardeen, W. Brattain, and W.
Shockley for the transistor |
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1961-Dean Kamen
inventor of the Segway Transporation System born in Rockville Centre,
N.Y. |
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1869-Patent # 88,711
issued to Isaac Hodgson for the "roller skate" |
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1860-Will Keith
Kellogg inventor of Kellogg's Corn Flakes born in Battle Creek,
Michigan |
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1996-Benjamin
Eisenstadt inventor of Sweet n' Low Patent # 3,625,711, born |
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1919-John Presper Eckert, Jr. was an
American engineer and co-inventor of the first general-purpose electronic
computer born |
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1790-President George Washington signed the
bill establishing the American patent system.
1849-Patent # 6,281 issued to Walter Hunt for the safety pin |
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1899-Percy L. Julian African-American
chemist, whose 100 patents include the synthesis of cortisone, hormones,
and other products from soybeans born |
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1988-Drs. Leder and Stewart on behalf of
Harvard University were issued the first patent # 4,736,866 for a new
animal life form - a genetically altered mouse |
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1869-Patent # 88,929 issued to George
Westinghouse for air brake
1971-Patent # 3,574,791 issued to Patsy Sherman and Sam Smith for
SCOTCHGARD™ |
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1914-Patent # 1,093,310 issued to Stacy G. Carkhuff of
the Firestone Rubber Co, for a non-skid tire pattern (tread). |
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1452-Leonardo di ser Piero da Vinci is
born in the small town of Vinci, in Tuscany, Italy |
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1867-Orville Wright co-inventor of
powered flight born in in Millville, Indiana |
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1973-Patent # 3,728,480 issued to Ralph Baer
for Magnavox Odyssey Video game system |
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2003-Edgar Frank Codd inventor of the
theoretical foundation of relational database died |
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1877-Ole Evinrude, inventor of the
outboard motor, born in Oslo, Norway
1956-Yahtzee Trademarked, Reg. No. 0642862 |
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1902-Marie and Pierre Curie isolated one
gram of radium, the first sample of the radioactive element. They had
refined it from eight tons of pitchblende ore. |
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1857-Patent # 17,082 issued to Alexander
Douglas, the first U.S. patent for a bustle |
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1924-Patent # 1,490,987 issued to Harry E.
Soref.for a laminated padlock |
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1856-Granville T. Woods, inventor of a
Multiplex Railway Telegraph, born in Columbus, Ohio |
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1981-the first IBM personal computer was
introduced. |
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1874-Guglielmo
Marconi inventor of a
practical radio-signaling system born in Bologna, Italy |
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1900-Dr. Charles Francis Richter was a
seismologist and inventor of the Richter Scale that measures earthquake
intensity |
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1847-Henry Marcus Quackenbush, inventor of a
nutcracker, born in Herkimer, New York |
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1937-Wallace Hume Carothers inventor of
Nylon died |
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1913-Patent # 1,060,378 issued to
Gideon Sundback for the zipper |
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1883-A company that would build the first
U.S. three-wire central station for incandescent lighting - the Edison
Electric Illuminating Co. was incorporated. |
DID YOU KNOW?
- April is the fourth month of the year in the
Gregorian Calendar and one of four with the length of 30 days.
- April's birthstone is the diamond.
- April in the Northern Hemisphere is the seasonal
equivalent to October in the Southern Hemisphere and vice versa.
- Chocolate Eaters Month
- Mathematics Awareness Month
- Reading Is Fun Week (begins last Sun)
- Teacher Appreciation Week (begins Last Mon)
- Arbor Day (last Friday)
- April Fool's Day (April 1)
- Earth Day (April 22)
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