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Patents > Grant date: 1914 & CPCs : CPC B64B1/00 or CPC B64C3/14

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John Arthur Armstrong (3) · Adolphe Clément-Bayard (3) · Ernest Henry (2) · None (2)
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None (3) · Adolphe Clément-Bayard (3) · John Arthur Armstrong (3) · Ernest Henry (2)
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