Science and invention in Birmingham pen nibs per week. 1915: William Mills develops the first "safe grenade" meaning it is safe for the soldier throwing it rather than his opponent. It is named the Mills bomb, and is adopted by the British Army as its standard hand grenade in 1915. 75,000,000 grenades are supplied during The Great War. 1918: Much work is carried out by Oliver Lucas's company on the design and improvement of the military search light, he also designs a signalling lamp after experiences at the Somme and the design is later used by the British Army. 1920: Charles Henry Foyle invents the
Telephone numbers in Brazil with the lower ranges of "9 (91-95)", then "8", and so on. As a consequence, in the beginning "9" was more commonly assigned to mobile operators that used older technologies such as AMPS (analog), TDMA and CDMA, while for some time "8" was specifically reserved for all new GSM licenses. Now GSM is universally adopted by Brazilian mobile operators and, combined with number portability and the inclusion of a ninth digit to the left (see below), this distinction is no longer observed or meaningful. Brazilian mobile phone numbers always have nine digits now, but seven digits were usual in the