Goodfellow V. Barker. Important to Engineers, Railway ...

Goodfellow V. Barker. Important to Engineers, Railway ...
J. Spiller

A Letter to Sir Frederick Pollock, ... on the Subject of the Cause Goodfellow V. Barker, for an Alleged Infringement of Mr. Goodfellow's Patent for an “ Improvement in Metallic Pistons.” J. Spiller. to produce the quantity of motion and pressure ...

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