File:Patent-US-1457011.pdf

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Original file(1,159 × 1,704 pixels, file size: 177 KB, MIME type: application/pdf, 3 pages)
Inventor

Horace H. Welch

Assignee

The Wahl Company

Country

US

Application N°

407462

Application Date

1920-09-01

Patent N°

1457011

Brevettato

1923-05-29

Priorità

1920-09-01

Brand

Eversharp

Title

Pencil

Description

Matita meccanica

Riferimenti esterni

Informazioni

Brevetto per il meccanismo di una matita meccanica.

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current18:11, 24 July 2012Thumbnail for version as of 18:11, 24 July 20121,159 × 1,704, 3 pages (177 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Horace H. Welch |Assignee=The Wahl Company |Country=US |ApplicationNum=407462 |ApplicationDate=1920-09-01 |PatentNum=1457011 |PatentDate=1923-05-29 |PriorityDate=1920-09-01 |Titolo=Pencil |Marca=Eversharp |Descrizione=Matita mecc...
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