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26th August 1915, Page 22

26th August 1915

Page 22

Page 22, 26th August 1915

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Patents Completed.

T. CROSBR2 AND SONS . , LTD., and D. 31cGRER0R, No. 19,886„ dated 17th September, 1914.—In this sparking plug mica washers are used to form the main body of the insulator. The......