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Scientific American, Vol. 62, No. 19 (May 1890) (1890)

leaf 4

An illustration from Scientific American, Vol. 62, No. 19 (May 1890), 1890, leaf 4
red with a patent bread cutter, and is intended for use in of the extensions of the lower set of plates have aper- surface or may bear a flag. The entire signal is of such prisons,workhouses, and other reformatory institutions. tured ears pivotally connected with lugs projected in- length that when… … in Congress to establish a court of pat- ent appeals seems to be a step in the BALLARD'S DUST GUARD AND VENTILATOR FOR CAR right direction. Litigation growing WINDOWS. out of patents for inventions is becom- ing very voluminous ; and, what is ward from a reciprocating operating lever. This lever…

Wire · Apparatus · Munn · Patents · Scientific American · Large · Otto gas · Illustration represents · Carbonic acid · Railway safety · Storage battery · Plate glass · Sliding bar · High pressure · Express money

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