Spain

The Spanish patent office at the time of early aviation was Dirección Especial de Patentes, Marcas e Industria (1887–1992) and the current one is la Oficina Española de Patentes y Marcas.

(Patents were available in Spain before this time. Urling, 1845 (p. 272) records that foreigners could apply for patents of 5, 10, or 15 years, but would need to put their invention into use within one year of the patent, or else it would be nullified.)

From 1896 the Spanish military service for aeronautics was the Servicio Militar de Aerostación; the Servicio de Aeronáutica Militar, responsible for airplanes, was created in 1913. Pere Vives Vich was a dominant figure in both. Leonardo Torres Quevedo was a key Spanish inventor who also built an early balloon for the Servicio Militar de Aerostación.

ES is an abbreviation in this wiki referring to Spain.

Patricio Saiz is a key expert on 19th century Spanish patents, and wrote an article on the aeronautical ones: 2.2. AERONÁUTICA E INVENCIÓN EN LA ESPAÑA DEL SIGLO XIX, J. P. Sáiz González, Universidad Autónoma de Madrid. (To do: spin that publication off into a page with notes from it.)

Patents filed in Spain: Patent ES-1910-48007, Patent ES-1860-2037, Patent ES-1907-41781, Patent ES-1909-45133, Patent ES-1910-46752, Patent ES-1910-46751, Patent ES-1913-540606, Patent ES-1913-56358, Patent ES-1913-56713, Patent ES-1914-58017, Patent ES-1919-71897, Patent ES-1920-75215, Patent ES-1921-79947, Patent ES-1855-1315, Patent ES-1859-1775, Patent ES-1859-1828, Patent ES-1861-2320, Patent ES-1864-2622, Patent ES-1871-4766, Patent ES-1871-4845, Patent ES-1872-4893, Patent ES-1872-4903, Patent ES-1877-5392, Patent ES-1877-5650, Patent ES-1877-5683, Patent ES-1878-5888, Patent ES-1880-1217, Patent ES-1882-2185, Patent ES-1882-1522, Patent ES-1885-5064, Patent ES-1887-7348, Patent ES-1887-7081, Patent ES-1891-12658, Patent ES-1897-20837, Patent ES-1898-23070, Patent ES-1899-24240, Patent ES-1899-23747, Patent ES-1900-25267, Patent ES-1900-25861, Patent ES-1900-27002, Patent ES-1901-27048, Patent ES-1901-27364, Patent ES-1901-27849, Patent ES-1903-31918, Patent ES-1904-34443, Patent ES-1904-35129, Patent ES-1906-38661, Patent ES-1906-38692, Patent ES-1907-40625, Patent ES-1906-38457, Patent ES-1907-41537, Patent ES-1908-43095, Patent ES-1908-43361, Patent ES-1908-42535, Patent ES-1908-44180, Patent ES-1908-44333, Patent ES-1908-44332, Patent ES-1908-44547, Patent ES-1909-44698, Patent ES-1909-44860, Patent ES-1909-44956, Patent ES-1909-45135, Patent ES-1909-45134, Patent ES-1909-45132, Patent ES-1909-45199, Patent ES-1909-45263, Patent ES-1909-45940, Patent ES-1910-49064, Patent ES-1909-46972, Patent ES-1909-47112, Patent ES-1909-47078, Patent ES-1910-47103, Patent ES-1910-47275, Patent ES-1910-47431, Patent ES-1910-47591, Patent ES-1910-47627, Patent ES-1910-47761, Patent ES-1910-47848, Patent ES-1910-47870, Patent ES-1910-48074, Patent ES-1910-48087, Patent ES-1910-48286, Patent ES-1910-48028, Patent ES-1910-48442, Patent ES-1910-48744, Patent ES-1910-49189, Patent ES-1910-49495, Patent ES-1910-49574, Patent ES-1911-49932, Patent ES-1911-50145, Patent ES-1911-50435, Patent ES-1911-50083, Patent ES-1911-50985, Patent ES-1911-51924, Patent ES-1912-52043, Patent ES-1912-52792, Patent ES-1912-53109, Patent ES-1912-53066, Patent ES-1912-53553, Patent ES-1912-53762, Patent ES-1912-53784, Patent ES-1912-53186, Patent ES-1912-54531, Patent ES-1912-54571, Patent ES-1913-54689, Patent ES-1913-54858, Patent ES-1913-54942, Patent ES-1913-55202, Patent ES-1913-54825, Patent ES-1913-55487, Patent ES-1913-55705, Patent ES-1913-55698, Patent ES-1913-56067, Patent ES-1913-56145, Patent ES-1913-56184, Patent ES-1914-57373, Patent ES-1914-57391, Patent ES-1914-57492, Patent ES-1914-57622, Patent ES-1914-57750, Patent ES-1914-57862, Patent ES-1914-58080, Patent ES-1915-59627, Patent ES-1915-60039, Patent ES-1915-60978, Patent ES-1915-61226, Patent ES-1916-62701, Patent ES-1917-64380, Patent ES-1919-69237, Patent ES-1919-70626, Patent ES-1922-81222, Patent ES-1923-84420
Patents filed by persons from Spain: Patent GB-1872-3076, Patent ES-1860-2037, Patent BE-1911-02-02 Leonardo Torres Quevedo, Patent BE-1913-253298, Patent BE-1914-253298.264297, Patent BE-1914-267684, Patent GB-1915-7534, Patent ES-1855-1315, Patent ES-1859-1828, Patent ES-1861-2320, Patent ES-1864-2622, Patent ES-1871-4845, Patent ES-1872-4903, Patent ES-1877-5392, Patent ES-1887-7348, Patent FR-1888-192678, Patent CH-1889-589, Patent GB-1899-11293, Patent FR-1901-308724, Patent ES-1900-27002, Patent ES-1901-27048, Patent FR-1902-320901, Patent FR-1902-320901.784, Patent MX-1902-2557, Patent FR-1902-327218, Patent ES-1903-31918, Patent GB-1903-27073, Patent MX-1906-5384, Patent ES-1906-38692, Patent FR-1907-382794, Patent FR-1907-380572, Patent MX-1909-10000, Patent US-1909-919436, Patent US-1909-929217, Patent ES-1909-44956, Patent GB-1909-8350, Patent FR-1909-382794.11071, Patent FR-1909-382794.11472, Patent FR-1910-411062, Patent FR-1909-382794.11706, Patent ES-1910-47431, Patent ES-1910-47870, Patent FR-1910-418838, Patent FR-1911-425969, Patent CH-1911-57184, Patent GB-1911-4610, Patent FR-1912-439618, Patent GB-1912-2737, Patent GB-1912-6564, Patent FR-1913-382794.17133, Patent FR-1913-455122, Patent GB-1913-4301, Patent FR-1914-467845, Patent ES-1914-57622, Patent ES-1915-59627, Patent FR-1915-478617, Patent ES-1919-70626, Patent US-1920-1454944