Ricerca semantica
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- Year 1960, n° US-D195385, applied in 1963, by Homer T. Green. Fountain pen nib.
- Year 1960, n° US-3134362, applied in 1964, by Homer T. Green. Fountain pen.
- Year 1960, n° US-3154055, applied in 1964, by Ray A. Lawton. Fountain pen.
- Year 1961, n° US-3038506, applied in 1962, by Robert L. Kuranz. Filler device for fountain pens.
- Year 1961, n° US-D196993, applied in 1963, by Homer T. Green. Writing instrument ink cartridge.
- Year 1961, n° US-D205872, applied in 1963, by Kenneth Parker. Writing instrument.
- Year 1970, n° US-D220663, applied in 1971, by Homer T. Green. Fountain pen nib.
- Year 1970, n° US-D223130, applied in 1972, by Homer T. Green. Fountain pen.
- Year 1977, n° US-D252464, applied in 1979, by Elmer D. Thompson, Martin E. Wachs. Fountain pen nib.