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| 1900 |
| | | Ferdinand Zeppelin's first dirigible makes its test flight from a floating hangar on the Lake of Constance | |
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| 1900 |
| | | Wilbur and Orville Wright test a biplane glider at Kitty Hawk in North Carolina | |
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| 1903 |
| | | Orville Wright travels 40 yards in the first successful powered flight, at Kitty Hawk in North Carolina | |
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| 1904 |
| | | US inventor King C. Gillette receives a patent for a disposable safety razor | |
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| 1905 |
| | | The first boat to be powered by a combustion engine, the 125-ton vessel Venoga, is launched on Lake Geneva | |
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| 1907 |
| | | US inventor Lee De Forest patents the Audion, a sensitive vacuum-tube radio receiver | |
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| 1907 |
| | | Samuel Simon, working in Manchester, takes out a patent for the use of silk to support a stencil | |
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| 1908 |
| | | Swiss chemist Jacques Brandenberger patents cellophane, a flexible transparent film made from cellulose | |
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| 1911 |
| | | US inventor Isaac Newton Lewis patents a lighter version of the machine gun | |
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| 1912 |
| | | US aeroplane designer Glenn Curtis demonstrates the potential of the first successful flying boat, The Flying Fish | |
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