US1747165A
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Plate holder for chromium-plating machines
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US1731456A
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Chromium-plating machine
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US1795481A
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Process of electrodepositing chromium
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US1603332A
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Etching or like machine
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US1621317A
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Engraving or like machine
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US1551648A
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Engraving machine
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US1421426A
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Etching or like machine
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US1486324A
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Printing plate
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US1421427A
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Etching or like machine
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US1341739A
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Etching-machine
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US1372494A
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Priming-cup
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US1275408A
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Art or method of etching steel or other like plates.
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US1235668A
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Pantographic engraving-machine.
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US1039714A
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Engraving and similar machine.
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US1039713A
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Etching-machine.
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US1039712A
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Engraving-machine.
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US816307A
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Engraving-machine.
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US792252A
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Engraving-machine.
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US660790A
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Engraving-machine.
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US648396A
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Ruling attachment for engraving-machines.
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