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Keywords: Projectiles with copper rings - The Engineer 1908-11-20.png en The obituaries of Josiah Vavasseur 1834-1908 described his different inventions This illustration of the copper rings he invented for projectiles is from the periodical The Engineer November 20 1908 page 536 The Engineer 1908-11-20 page 536 http //www gracesguide co uk/images/2/2d/Er19081120b pdf Link to source at gracesguide co uk creator Unknown 1909 The Engineer magazine 1908-11-20 Josiah Vavasseur PD-old-70-1923 |