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Patents > Grant date: 1920 - 1929 & CPCs : CPC B64B1/00 or CPC B64C13/00

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None (8) · Anton Flettner (6) · Michel Schleiffer (2) · GOODYEAR TIRE RUBBER (2) · Chessborough Mackenzie-Kennedy (2) · René Caudron (2)
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None (5)
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