File:Patent-US-1507729.pdf

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Original file(1,159 × 1,704 pixels, file size: 175 KB, MIME type: application/pdf, 3 pages)
Inventor

Arthur O. Dahlberg

Assignee

Arthur O. Dahlberg

Country

US

Application N°

586279

Application Date

1922-09-05

Patent N°

1507729

Brevettato

1924-09-09

Priorità

1922-09-05

Brand

Parker

Title

Fountain pen

Description

Sistema di caricamento

Riferimenti esterni

Informazioni

Brevetto per un precursore del caricamento Vacumatic, acquisito dalla Parker in seguito e considerato per questo la base da cui poi è stata creata la versione definitiva (brevetto nº US-1980508).

File history

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Date/TimeThumbnailDimensionsUserComment
current01:01, 3 July 2012Thumbnail for version as of 01:01, 3 July 20121,159 × 1,704, 3 pages (175 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Arthur O. Dahlberg |Assignee=Arthur O. Dahlberg |Country=US |ApplicationNum=586279 |ApplicationDate=1922-09-05 |PatentNum=1507729 |PatentDate=1924-07-16 |PriorityDate=1922-09-05 |Titolo=Fountain pen |Marca=Parker |Descrizione=Pre...
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