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Fatti riguardanti Patent-US-631909.pdf
Application date | aprile 16, 1898 + |
Application number | 677779 + |
Assigned to | William W. Stewart + |
Invented by | William W. Stewart + |
Mention patent | ![]() ![]() |
Patent date | agosto 29, 1899 + |
Patent description | Sistema di caricamento + |
Patent number | 631909 + |
Patent title | Fountain-pen + |
Patented by | Swan + |
Patented in | US + |
Priority date | aprile 16, 1898 + |