25th December 1913, Page 20
25th December 1913
Page 20
Page 20, 25th December 1913
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Patents Completed.
Cooling Mushroom Valves. A Motor Digging Machine. MA SCHINENFA BR1K A en SBERG -N trENBERG, A.g. No, 409/13, dated under International Convention 8th January, 1912.—The valves......