ES136409A1
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Improvements in the construction of presses for the preparation of fuel briquettes.
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ES136408A1
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Improvements in equipment and means for the treatment of coal and similar materials.
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GB126756A
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An Improved Process for the Manufacture of Permanganates.
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US1250183A
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Electrolytic cell.
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US1185407A
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Electrolytic cell.
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CA166990A
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Electrolytic cell
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GB191422867A
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Improvements in Electrolytic Cells.
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US1150370A
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Electrolytic cell.
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GB191325415A
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Improvements in Electrolytic Cells.
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GB190507242A
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Improvements in Power Transmission Gear.
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GB190312106A
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Improvements in or relating to the Regulation of Engines and Pumps.
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GB189821851A
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Improvements in or relating to the Manufacture of "Producer Gas" and Apparatus therefor.
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CA43243A
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Type writer
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