Drilldown: Patents

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Patents > Office: HU & Number of text pages: 3-5 & Number of diagram pages: 2-3

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None (2) · Hermann Ruthenberg (2) · Joseph de Pierpont de Burnot (2)
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None (2) · Hermann Ruthenberg (2) · Joseph de Pierpont de Burnot (2)
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Showing below up to 36 results in range #1 to #36.

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