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Patents > Tech fields : control or lift & Grant date: 1919

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None (5) · Harris Booth (4) · René Caudron (3) · Émile Letord (2) · William Deshler Warner (2) · Wilfrid Thomas Reid (2) · Walter George Tarrant (2) · Richard Fitz Power (2) · John William Copley (2) · James Frederick Verner (2) · Alfred John Macy (2) · Harold Ingram Sidgwick (2) · Claude Grahame-White (2)
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None (6) · Harris Booth (4) · René Caudron (3) · Émile Letord (2) · William Deshler Warner (2) · Wilfrid Thomas Reid (2) · Walter George Tarrant (2) · Richard Fitz Power (2) · John William Copley (2) · James Frederick Verner (2) · Alfred John Macy (2) · Harold Ingram Sidgwick (2) · Claude Grahame-White (2)
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None (10) · 324718 (2)
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