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Patents > Filing date: November 1918 & Family year: 1918

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CPC B64C3/00 (5) · CPC B64C2700/6235 (4) · CPC B64C1/065 (3) · CPC B64C3/18 (3) · CPC B64C3/385 (2) · CPC B64C9/00 (2) · CPC B64C17/00 (2) · None (2) · CPC B64B1/00 (2) · CPC B64B1/58 (2)
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