File:Patent-US-2509465.pdf

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Original file(1,159 × 1,704 pixels, file size: 417 KB, MIME type: application/pdf, 7 pages)
Inventor

Russell T. Wing

Assignee

Russell T. Wing

Country

US

Application N°

655077

Application Date

1946-03-18

Patent N°

2509465

Brevettato

1950-05-30

Priorità

1946-03-18

Brand

Unbranded

Title

Dual-well fountain pen

Description

Doppio serbatoio

Riferimenti esterni

Informazioni

Brevetto per una stilografica con un doppio serbatoio in modo da ridurre gli effetti della pressione dell'aria interna. Riferimenti a nº US-651736, nº US-961663, nº US-1007619, nº US-1313056, nº US-1567527, nº US-1651047, nº US-1910907 e nº US-2187528; ed inoltre nº GB-6570.

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current00:23, 8 July 2012Thumbnail for version as of 00:23, 8 July 20121,159 × 1,704, 7 pages (417 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Russel T. Wing |Assignee=Russel T. Wing |Country=US |ApplicationNum=655077 |ApplicationDate=1946-03-18 |PatentNum=2509465 |PatentDate=1950-03-30 |PriorityDate=1946-03-18 |Titolo=Dual-well fountain pen |Marca=Unbranded |Descrizion...
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