File:Patent-US-1990441.pdf

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Original file(1,159 × 1,704 pixels, file size: 408 KB, MIME type: application/pdf, 6 pages)
Inventor

Albert H. Stenersen

Assignee

The Wahl Company

Country

US

Application N°

666443

Application Date

1933-04-17

Patent N°

1990441

Brevettato

1935-02-05

Priorità

1933-04-17

Brand

Eversharp

Title

Fountain pen

Description

Sistema di caricamento

Riferimenti esterni

Informazioni

Brevetto per una variante di sistema di caricamento a sfiatatoio, una sorta di caricamento Vacumatic in la depressione viene creata con un meccanismo a torsione di un sacchetto di gomma.

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current18:38, 26 July 2012Thumbnail for version as of 18:38, 26 July 20121,159 × 1,704, 6 pages (408 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Albert H. Stenersen |Assignee=The Wahl Company |Country=US |ApplicationNum=666443 |ApplicationDate=1933-04-17 |PatentNum=1990441 |PatentDate=1935-02-05 |PriorityDate=1933-04-17 |Titolo=Fountain pen |Marca=Eversharp |Descrizione=S...
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