File:Patent-US-2397229.pdf

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Original file(1,159 × 1,704 pixels, file size: 381 KB, MIME type: application/pdf, 6 pages)

Dettagli

Inventor

Jozsef Laszlo Biro

Assignee

Eterpen S. A.

Country

US

Application N°

650140

Application Date

1943-06-17

Patent N°

2397229

Brevettato

1946-03-26

Priorità

1943-05-19

Brand

Eterpen

Title

Writing instrument

Description

Penna a sfera

Riferimenti esterni

Informazioni

Brevetto per la penna a sfera, la prima versione di Lazlo Biro.

File history

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Date/TimeThumbnailDimensionsUserComment
current19:46, 7 July 2012Thumbnail for version as of 19:46, 7 July 20121,159 × 1,704, 6 pages (381 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Jozsef Laszlo Biro |Assignee=Eterpen S. A. |Country=US |ApplicationNum=650140 |ApplicationDate=1943-06-17 |PatentNum=2397229 |PatentDate=1946-03-26 |PriorityDate=1943-05-19 |Titolo=Writing instrument |Marca=Eterpen |Descrizione=I...

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