Ricerca semantica

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  • Year 1950, n° US-2669224, applied in 1954, by Benjamin F. Miessner. Pen nib with spreader.
  • Year 1951, n° US-D163686, applied in 1951, by Mendel Fried. Fountain pen cap.
  • Year 1951, n° DE-900667, applied in 1953, by Balthasar Götz. Einsatzspitze für Kugelschreiber mit Flüssigkeitsfüllung von vorne.
  • Year 1951, n° GB-705613, applied in 1954, by Balthasar Götz. Improvements in Self-Filling Ball Point Pens.
  • Year 1951, n° FR-61714E, applied in 1955, by Pierre-Marie-Joseph Ledieu. Système régulateur d'alimentation pour porte-plumes réservoirs et similaires.
  • Year 1952, n° US-2640297, applied in 1953, by Soren S. Adams. Explosive fountain pen.
  • Year 1957, n° DE-1763291U, applied in 1958, by Gilbert Richard. Schreibgerät.
  • Year 1959, n° DE-1806422U, applied in 1960, by Arno Rodhüser. Halter für Schreibgeräte.