Drilldown: Patents

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Patents > National tech categories: DK 77 & CPCs : CPC G01R22/02 or None

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None (3) · Alfred John Macy (3) · Richard Wilcke (2) · Albert Graff (2) · Walter George Tarrant (2) · Carl Franz Hubert Hertel (2) · Carl Wilhelm Paul (2) · Christian Magnus Gyde Jensen (2)
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Showing below up to 39 results in range #1 to #39.

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