Memoria: Patent form nº 3. Patents and designs acts 1907 and 1919. Nº 29.679, filed 3-09-1926. Divisional Application re 29.630/25, 24-11-1926. Group 2b. Complete specification. «Improvements in or relating to aircraft with rotative wings»
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Memoria: Patent form nº 3. Patents and designs acts 1907 and 1919. Nº 29.679, filed 3-09-1926. Divisional Application re 29.630/25, 24-11-1926. Group 2b. Complete specification. «Improvements in or relating to aircraft with rotative wings»
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