Mail Related
Postmarking and canceling machines, letter boxes and Rowland postage stamps.
Marlex
Research chemists, Paul Hogan and Robert Bank invented Marlex a plastic.
Marshmallows
The history of marshmallows.
Maser Laser
Arthur Schawlow received a patent for the maser laser.
Matches
John Walker brought the power of Prometheus to our fingertips.
Mathematics Related
Learn about the history of math and the inventions associated with mathematics.
MDMA
MDMA or ecstasy began as a 1913 patent belonging to the Merck Chemical Company.
Measuring Tools
From Noah's ark to modern times, read about the history of measurement and measuring
tools.
Mechanization (Postal)
The early Post Office Department relied entirely on antiquated mailhandling operations.
Medical Related
The history behind many key medical innovations.
Megaphones
Cecile B DeMille was the first director to use a megaphone on the movie set.
Menlo Park
Thomas Edison had his first laboratory in Menlo Park, New Jersey nicknamed the
invention factory.
Mercury Thermometer
The mercury thermometer was invented by Daniel Gabriel Fahrenheit in 1714.
Mercury Vapor Lighting
Read about the history of mercury lighting.
Metal Detector
Alexander Graham Bell invented the first crude metal detector in 1881. The portable
metal detector was invented by Gerhard Fischar in 1931.
MICR - Magnetic Ink Character Recognition
The first bank industry computer used MICR (magnetic ink character recognition) for
reading checks.
Microbiology Related
Timeline and profiles on inventors related to microscopy, culture methods, germ theory of
disease, defense or control of microbes and molecular methods.
Microchip, History of
The integrated circuit was co-invented by Jack Kilby and Robert Noyce. Also See -
Microchip, Technology of
ron
(Ron)
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