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Facts about "Patent-US-2167815.pdf"
Application date | March 10, 1938 + |
Application number | 195136 + |
Assigned to | Montblanc-Simplo G.m.b.H. + |
Invented by | Ernst Rösler +, Heinrich Schwarting + and Konrad Kressel + |
Mention patent | ![]() |
Patent date | August 1, 1939 + |
Patent description | Caricamento a stantuffo telescopico + |
Patent number | 2167815 + |
Patent title | Fountain pen + |
Patented by | Montblanc + |
Patented in | US + |
Priority date | April 2, 1937 + |
Same invention of | ![]() ![]() |
Used for feature | Piston filler + |