File:Patent-US-2314551.pdf

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Original file(1,159 × 1,704 pixels, file size: 175 KB, MIME type: application/pdf, 4 pages)
Inventor

Wilbur K. Olson

Assignee

W. A. Sheaffer Pen Company

Country

US

Application N°

398185

Application Date

1941-06-16

Patent N°

2314551

Brevettato

1943-03-23

Priorità

1941-06-16

Brand

Sheaffer

Title

Fountain pen

Description

Cappuccio e controcappuccio

Riferimenti esterni

Informazioni

Brevetto la costruzione di cappuccio dotato di un controcappuccio con una valvola per permettere la equalizzazione della pressione atmosferica.

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current02:57, 15 July 2012Thumbnail for version as of 02:57, 15 July 20121,159 × 1,704, 4 pages (175 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Wilbur K. Olson |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=398185 |ApplicationDate=1941-06-16 |PatentNum=2314551 |PatentDate=1943-03-23 |PriorityDate=1941-06-16 |Titolo=Fountain pen |Marca=Sheaffer |Descrizi...
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