Drilldown: Patents

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Patents > Grant date: 1800 - 1899 & CPCs: CPC B64B1/00 & Citations from after 1930: None

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Carl Friedrich Billwiller (2) · Stewart Cairncross (2) · Richard Czygan (2) · Ernst Georg August Baumgarten (2)
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None (17) · Carl Friedrich Billwiller (2) · Richard Czygan (2) · Ernst Georg August Baumgarten (2)
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