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All Patents in class 137/377
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,997,890	Apr. 16, 1935	E.L. Wall	Universal Tracer	hydraulic apparatus
2,843,148	Jul. 15, 1958	A.W. Rymills	Soft closing nozzle valve	locomotive diesel fuel apparatus

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