Five Reasons against the Extension of the Woodworth PatentLetter from Con stituents to a Member of Congress. SIR : 10 SCIENTIFIC AMERICAN. Propositions for Testing Engines and Boilers. Recent American Patents., 56-03-29


Five Reasons against the Extension of the Woodworth PatentLetter from Con stituents to a Member of Congress. SIR : 10 SCIENTIFIC AMERICAN. Propositions for Testing Engines and Boilers. Recent American Patents., 56-03-29


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