A NEW WRITING INSTRUMENT. NEW STEAK-TENDERING MALLET. THE MACKINNON PEN OR FLUID PENCIL. MECHANICAL INVENTIONS. NEW OATMEAL MACHINE. fr L STEPHENS' STEAK-TENDERING MALLET Fig. STHE MACKIN NON PEN Fig. 2SECTIONAL VIEW OF THE MACKNNON PEN. EBERHARD'S OATMEAL MACHINE., scientific american, 1880-04-24


A NEW WRITING INSTRUMENT. NEW STEAK-TENDERING MALLET. THE MACKINNON PEN OR FLUID PENCIL. MECHANICAL INVENTIONS. NEW OATMEAL MACHINE. fr L STEPHENS' STEAK-TENDERING MALLET Fig. STHE MACKIN NON PEN Fig. 2SECTIONAL VIEW OF THE MACKNNON PEN. EBERHARD'S OATMEAL MACHINE., scientific american, 1880-04-24


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