File:Patent-GB-451275.pdf
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Dettagli
Inventor |
Edward Stephen Sears |
---|---|
Assignee |
Mabie, Todd & Company Limited |
Country |
GB |
Application N° |
31281/34 |
Application Date |
1934-10-31 |
Patent N° |
451275 |
Brevettato |
1933-04-13 |
Priorità |
1934-10-31 |
Brand | |
Title |
Improvements in self-filling fountain pens |
Description |
Caricamento Visofil |
Riferimenti esterni
Informazioni
Brevetto per un sistema di caricamento con visualizzazione del livello di inchiostro, prima versione del Visofil. Priorità dal brevetto inglese. Stessa invenzione di nº US-2056055. Stessa invenzione di nº CH-187720. Stessa invenzione di nº FR-795964. Stessa invenzione di nº AT-148396.
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current | 14:40, 25 April 2013 | ![]() | 1,295 × 1,752, 6 pages (463 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Edward Stephen Sears |Assignee=Mabie, Todd & Company Limited |Country=GB |ApplicationNum=31281/34 |ApplicationDate=1934-10-31 |PatentNum=451275 |PatentDate=1933-04-13 |PriorityDate=1934-10-31 |Titolo=Improvements in self-filling ... |
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