The technique was jointly invented by Sir Lawrence Bragg (1862-1942) and his son Sir William Bragg (1890-1971), who won the Nobel Prize in Physics for 1915.

The so called Einstein refrigerator (an absorption refrigerator with no moving parts that runs at constant pressure and requires a heat source to operate) was jointly invented in 1926 by Albert Einstein and Leó Szilárd (his former grad student) and patented in the US on 11 November 1930.

Though not one to play down his attainments (he said he and the novelist John Dos Passos had jointly invented the margarita), Mr. Spratling undeniably brought good design, and with it prosperity, to Taxco.

The Photophone, also known as a radiophone, was invented jointly by Bell and his then-assistant Sumner Tainter on February 19, 1880, at Bell's 1325 'L' Street laboratory in Washington, D.C.

It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's 1325 'L' Street laboratory in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.

This work to an important extent prepared the way for the "smokeless powders" which came into general use towards the end of the 19th century; cordite, the type adopted by the British government in 1891, was invented jointly by him and Sir James Dewar.

The technique was jointly invented by Sir Lawrence Bragg (1862-1942) and his son Sir William Bragg (1890-1971).