US815372A
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Machine for molding artificial stone.
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US764623A
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Machine for molding artificial stone.
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US758681A
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Hopper.
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US734740A
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Hopper.
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US731941A
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Conveyer or artificial stone.
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US724608A
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Machine for molding artificial stone.
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US711257A
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Subway.
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US710995A
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Machine for molding artificial stone.
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US703452A
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Machine for molding artificial stone.
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US703081A
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Machine for molding artificial stone.
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US700551A
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Machine for folding artificial stone.
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US695483A
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Machine for molding artificial stone.
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US694985A
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Machine for molding artificial stone.
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