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Patents > Filing date: 1911 & Grant date: 1910 - 1919 & CPCs: CPC B64C13/00

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John P. Tarbox (2) · Alexander Horton (2) · Hugh Laussat Willoughby (2) · Halvor Olsen Eiane (2)
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Alexander Horton (2) · Hugh Laussat Willoughby (2) · Halvor Olsen Eiane (2)
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