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18th June 1914, Page 24

18th June 1914

Page 24

Page 24, 18th June 1914

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Patents Completed.

Sparking-plug Improvement. Novel Piston Rings. Steam Packing. II. G. LONGFORD and W. A. Cretux, No. 7365, dated 20th September, 1913.---The object of this invention is to......