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| 1912 |
| | | The first sea-going diesel-powered ship, the Selandia, is constructed and launched in Denmark | |
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| 1915 |
| | | The Corning Glass Company launches Pyrex, a new range of heat-resistant kitchen ware made from borosilicate glass | |
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| 1915 |
| | | Thomas Edison invents a machine to record telephone conversations, calling it the telescribe | |
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| 1915 |
| | | Winston Churchill is a firm supporter of a new invention, the tank, encouraging its initial development while still at the Admiralty | |
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| 1915 April 1 |
| | | The French aviator Roland Garros fires a machine gun through the propeller in his fighter plane, using metal plates to deflect any bullets that hit the propeller | |
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| 1915 June |
| | | Dutch aircraft designer Anton Fokker, working for the Germans, vastly improves the Roland Garros technique for firing machine guns through the propellers of fighter planes | |
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| 1916 |
| | | Captain Peter Nissen, a Canadian mining engineer, designs the Nissen Hut for the Allied armies | |
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| 1916 September 15 |
| | | Eleven British tanks go into pioneering but ineffective action at the battle of the Somme | |
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| 1917 November 20 |
| | | Suitable ground is selected by the British at the battle of Cambrai for the first serious deployment of their new tanks | |
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| 1924 |
| | | German scientist Felix Wankel builds a model of a rotary engine, thirty years before the first prototype is manufactured | |
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