File:Patent-US-1574457.pdf

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Original file(1,159 × 1,704 pixels, file size: 351 KB, MIME type: application/pdf, 6 pages)
Inventor

John C. Wahl

Assignee

The Wahl Company

Country

US

Application N°

449804

Application Date

1921-03-05

Patent N°

1574457

Brevettato

1926-02-23

Priorità

1921-03-05

Brand

Eversharp

Title

Mechanical pencil

Description

Matita meccanica

Riferimenti esterni

Informazioni

Brevetto per una matita meccanica. Riferimenti a nº US-1151016 e nº US-1279186.

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Date/TimeThumbnailDimensionsUserComment
current17:09, 16 July 2014Thumbnail for version as of 17:09, 16 July 20141,159 × 1,704, 6 pages (351 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=John C. Wahl |Assignee=The Wahl Company |Country=US |ApplicationNum=449804 |ApplicationDate=1921-03-05 |PatentNum=1574457 |PatentDate=1926-02-23 |PriorityDate=1921-03-05 |Titolo=Mechanical pencil |Marca=Eversharp |Descrizione=Mat...
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