File:Patent-US-1488385.pdf

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Original file(1,159 × 1,704 pixels, file size: 260 KB, MIME type: application/pdf, 5 pages)

Dettagli

Inventor

William P. De Witt

Assignee

De Witt-La France Company

Country

US

Application N°

503149

Application Date

1921-09-26

Patent N°

1488385

Brevettato

1924-03-25

Priorità

1921-09-26

Brand

De Witt-La France

Title

Pencil with floating clutch

Description

Matita meccanica

Riferimenti esterni

Informazioni

Brevetto per una matita meccanica.

File history

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Date/TimeThumbnailDimensionsUserComment
current23:05, 25 June 2012Thumbnail for version as of 23:05, 25 June 20121,159 × 1,704, 5 pages (260 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=William P. De Witt |Assignee=De Witt-La France Company |Country=US |ApplicationNum=503149 |ApplicationDate=1921-09-26 |PatentNum=1488385 |PatentDate=1924-03-25 |PriorityDate=1921-09-26 |Titolo=Pencil with floating clutch |Marca=D...

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