FRANCE MNH STAMP Yv#493 $92 Sc#414 Plane Pioneer Ader
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Clément Ader (2 April 1841 – 5 March 1925) was a French inventor and engineer born in Muret , Haute Garonne , and is remembered primarily for his pioneering work in aviation . Ader innovated in a number of electrical and mechanical engineering fields. He originally studied electrical engineering , and in 1878 improved on the telephone invented by Alexander Graham Bell . After refining the Bell Telephone he established the first such network in Paris in 1880. In 1881, he invented the " théâtrophone ", a system of telephonic transmission where listeners received a separate channel for each ear, enabling stereophonic perception of the actors on a set; it was this invention which gave the first stereo transmission of opera spectacles, over a distance of 2 miles (3 km) in 1881. In 1903, he devised a V8 engine for the Paris-Madrid Rally ; although three or four were produced, none was sold. [1 ] CONDITION: WE DEAL ONLY WITH ORIGINAL FIRST CHOICE SELECTION STAMPS - MINT STAMPS ARE WITH ORIGINAL GUM OTHERWISE LACK OF GUM IS DETAILED IN DESCRIPTION. ALL STAMPS ARE FREE OF FAULTS UNLESS THEY ARE DETAILED IN DESCRIPTION BELOW THIS LINE. TINY SPOT ON ITEM PRICING: WELL CLASIFIED STAMPS ! AS WE CAREFULLY CLASIFY STAMPS USING SCOTT CATALOGUE - STANLEY GIBONS (FOR BRITISH COMMONWEALTH) - SASSONE (FOR ITALY) ETC AND WE PLACE IN ORDER SO YOU CAN
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