File:Patent-US-1909194.pdf

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Original file(1,159 × 1,704 pixels, file size: 130 KB, MIME type: application/pdf, 3 pages)

Dettagli

Inventor

Assegnatario

Assignee

Joseph Wallace

Country

US

Application N°

540243

Application Date

1931-05-27

Patent N°

1909194

Brevettato

1933-05-16

Priorità

1931-05-27

Brand

Inkograph

Title

Fountain pen

Description

Sistema di visualizzazione del livello di inchiostro

Riferimenti esterni

Informazioni

Brevetto per la costruzione di un fondello trasparente per l'osservazione del livello di inchiostro.

File history

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Date/TimeThumbnailDimensionsUserComment
current18:48, 21 March 2021Thumbnail for version as of 18:48, 21 March 20211,159 × 1,704, 3 pages (130 KB)Piccardi (talk | contribs){{PatentInfo |Assignee=Joseph Wallace |Country=US |ApplicationNum=540243 |ApplicationDate=1931-05-27 |PatentNum=1909194 |PatentDate=1933-05-16 |PriorityDate=1931-05-27 |Titolo=Fountain pen |Marca=Inkograph |Descrizione=Sistema di visualizzazione del li...

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