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Fatti riguardanti Patent-US-1661225.pdf
Application date | marzo 6, 1926 + |
Application number | 92807 + |
Assigned to | Theodor Kovacs + |
Invented by | Theodor Kovacs + |
Patent date | marzo 6, 1928 + |
Patent description | Caricamento rientrante + |
Patent number | 1661225 + |
Patent title | Fountain pen + |
Patented by | Günther Wagner - Pelikan + |
Patented in | US + |
Priority date | marzo 3, 1925 + |
Used for feature | Safety filler + |