Ricerca semantica
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- Year 1947, n° FR-942385, applied in 1949. Dispositif d'accouplement automatique à verrouillage de sûreté.
- Year 1947, n° FR-944423, applied in 1949. Porte-plume réservoir perfectionné.
- Year 1947, n° FR-950038, applied in 1949, by Léon-Victor Roussel. Pointes obliques pour stylographes à bille.
- Year 1947, n° FR-950633, applied in 1949, by Henri Borrus. Perfectionnements aux stylographes.
- Year 1948, n° FR-960832, applied in 1950, by Serge-Ernest Detanne. Perfectionnements aux stylographes à billes.
- Year 1949, n° FR-991812, applied in 1951, by Pierre-Marie-Joseph Ledieu. Système régulateur d'alimentation pour porte-plumes réservoirs et similaires.
- Year 1827, n° FR-Poenaru, applied in 1827, by Pierre Poyenar. Plume sans fin portative, s'alimentant d'encre d'elle même.
- Year 1918, n° GB-114801, applied in 1918, by John James. A New or Improved Means of Increasing the Life of Pen Nibs.
- Year 1918, n° GB-127562, applied in 1919, by Jörgen Thorvald Andersen. Improvements in Stylographic Fountain Pens.
- Year 1920, n° GB-169616, applied in 1921, by Jean-Marie Cavaillé. Improvements in fountain pens.
- Year 1899, n° GB-189923550, applied in 1900, by Johannes Paul Steinbach, Karl Hermann Strache. Improvements in Fountain Penholders.
- Year 1902, n° GB-190213133, applied in 1903, by George William Perks, Frederik Charles Thacker. Improvements in Fountain or Reservoir Pens.
- Year 1904, n° GB-190428533, applied in 1905, by Benjamin William Warwick. Improvements in Reservoir Pens.
- Year 1919, n° GB-127532, applied in 1908, by Osmond Blythe Wade. Improvements in and relating to Loose Leaf Ledgers, Binders and the like.
- Year 1910, n° GB-191100218, applied in 1911, by Felix Riesenberg. Improvements in Fountain Pens.
- Year 1911, n° GB-191103257, applied in 1911, by Levi D. Van Valenburg. Improvements in Devices for Preventing the Loss of Fountain Pens and Pencils.
- Year 1912, n° GB-191218716, applied in 1912, by Felix Riesenberg. Improvements in and relating to Fountain Pens.
- Year 1925, n° GB-260304, applied in 1928, by Hermann Burkhardt, Paul Grob-Hablützel. Improvements in tools for poster writing.
- Year 1930, n° GB-344185, applied in 1931, by Albert Meredith Spain. Improvements in and relating to fountain pens.
- Year 1932, n° GB-396879, applied in 1933, by Andrew Stuart Horn. Improvements in or relating to Fountain or Reservoir Pens.
- Year 1933, n° GB-414250, applied in 1934, by Andrew Stuart Horn. Improvements in or relating to Writing Points or Nibs.
- Year 1933, n° GB-420164, applied in 1934, by Andrew Stuart Horn. Improvements in or relating to Retaining Means for Fountain Pens, Propelling Pencils, and the like in Garment Pockets.
- Year 1934, n° GB-435065, applied in 1935, by Andrew Stuart Horn. Improvements in or relating to Fountain or Reservoir Pens.
- Year 1935, n° GB-454040, applied in 1936, by Andrew Stuart Horn. Improvements in or relating to Fountain or Reservoir Pens.
- Year 1935, n° GB-476971, applied in 1937, by Vaclav Klimes. Writing implement.
- Year 1944, n° GB-586917, applied in 1947, by John Pinkney Gowland. Improvements in or relating to Pens.
- Year 1951, n° GB-705613, applied in 1954, by Balthasar Götz. Improvements in Self-Filling Ball Point Pens.
- Year 1869, n° US-087661, applied in 1869, by Henry S. Goodspeed. Inprovements in pens.
- Year 1910, n° US-1007619, applied in 1911, by Joseph A. Vogelmann. Self-filling fountain-pen.
- Year 1911, n° US-1020221, applied in 1912, by Joseph Rauchenecker. Fountain-pen.
- Year 1912, n° US-1037660, applied in 1912, by Felix Riesenberg. Fountain-pen.
- Year 1912, n° US-1038068, applied in 1912, by George F. Barrett. Fountain-pen.
- Year 1910, n° US-1050295, applied in 1913, by Felix Riesenberg. Fountain-pen.
- Year 1912, n° US-1059398, applied in 1913, by Philip J. Schreiber. Fountain-pen cap.
- Year 1910, n° US-1070496, applied in 1913, by Leopold Da Costa Levy. Combined calendar and pencil.
- Year 1870, n° US-109257, applied in 1870, by Fridolin Schifferle. Improvement in fountain-pens.
- Year 1906, n° US-1104567, applied in 1914, by Ruther W. Springer. Fountain-pen.
- Year 1915, n° US-1172342, applied in 1916, by Andrew O. Burgess. Writing implement.
- Year 1916, n° US-1195709, applied in 1916, by Lucifer J. Most. Fountain-pen.
- Year 1917, n° US-1250533, applied in 1917, by Levi D. Van Valenburg. Retaining clip for fountain-pens.
- Year 1918, n° US-1279821, applied in 1918, by Clements L. Argon. Fountain pen.
- Year 1916, n° US-1287556, applied in 1918, by Edward G. Woody. Fountain-pen.
- Year 1917, n° US-1289921, applied in 1918, by Sydney M. Rowe. Fountain-pen.
- Year 1916, n° US-1307630, applied in 1919, by William A. Haskins. Fountain-pen.
- Year 1918, n° US-1313056, applied in 1919, by Oswald H. Blackwood, Fred Pearson. Fountain-pen.
- Year 1919, n° US-1317817, applied in 1919, by Robert S. Ogilvy. Fountain-pen.
- Year 1918, n° US-1336119, applied in 1920, by Jörgen Thorvald Andersen. Stylographic fountain-pen.
- Year 1920, n° US-1372608, applied in 1921. Ink-content-indicating fountain-pen.
- Year 1921, n° US-1409616, applied in 1922. Fountain pen.
- Year 1918, n° US-1420275, applied in 1922, by Lucifer J. Most. Pencil.