File:Patent-GB-451275.pdf

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Original file(1,295 × 1,752 pixels, file size: 463 KB, MIME type: application/pdf, 6 pages)
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

Swan

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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current13:40, 25 April 2013Thumbnail for version as of 13:40, 25 April 20131,295 × 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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