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Mary Jacob


After decades of stuffing themselves into seemingly barbaric undergarments, mostly of a corset-like nature, women aroun

Clayton Jacobson

Personal Watercraft

A relatively recent but immensely popular addition to summertime leisure activities in the United States is the personal w

Robert Jarvik

Jarvik-7 Artificial Heart

Robert Koffler Jarvik, inventor of the first permanently-implantable artificial heart, was born in Michigan on May 11,

Allene Jeanes

Xanthan gum

Listed among the ingredients of countless foods, such as salad dressing, ice cream, canned soup, and condiments, is a m

Thomas Jefferson

Patent System

Most of us know Thomas Jefferson as the man who authored the Declaration of Independence, the United States’ first Secr

Sir Jefferys

Genetic Fingerprints

It may be difficult to imagine a world without the now-indispensable tool known as genetic fingerprinting, which analyz

Steve Jobs and Steve Wozniak

Apple Computer

Steve Jobs and Steve Wozniak, the duo who began Apple Computer in 1976, are among the most well-known revolutionaries of t

Charles Johnson

Train Detecting Device

Like many inventors, Charles Johnson started inventing around the time he started grade school.  However, with his

Reynold Johnson

Random Access Memory (RAM)

Reynold Johnson was born in 1906 in Minnesota.

Frederick Jones

Refrigeration Technology

Frederick McKinley Jones (1893-1961) applied the mechanical experience that he gained at work and at war to revolutioni