Marie Van Brittan Brown was an African American woman who, in 1969, secured the patent for the precursor to the modern home security system. She was born in Queens, New York, on Oct. 30, 1922. She married Albert Brown an... More »

While the exact inventor of the hot comb is unknown, an American woman by the name of Annie Malone holds the first patent on the design. The design was later improved upon by Madam CJ Walker, who widened the teeth of the... More »

Philip B. Downing is known for a number of patents, including the street letter box in 1890, the precursor to the modern postal box. Downing's design featured a simple, four-legged box with a hinged metal door for sendin... More »

The precursor to the Internet was the Advanced Research Projects Agency Network. ARPANET was a network developed by the Advanced Research Projects Agency in the late 1960s, with network nodes initially located at major u... More »

The precursor to the modern-day douche was invented by Anthony E. Magoris. He called his invention the combined syringe and speculum. He was awarded a patent for it on Mar. 29, 1892. More »

The precursor to the radio, the Tesla coil, was invented by Nikola Tesla in 1884, and Tesla's device to send a radio signal, which was ready to go, was burned up in a lab fire in 1895. Instead, Guglielmo Marconi tested h... More »

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Historians disagree about the actual inventor of the bicycle, although the celerifere, which was a precursor to bicycles, was invented in 1790 by Comte Med de Sivrac. Historians generally agree that Ernest Michaux, a Fre... More »

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