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File:Patent-US-2293622.pdf

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Original file(1,159 × 1,704 pixels, file size: 330 KB, MIME type: application/pdf, 6 pages)
Inventor

John William Para

Assignee

David Kahn Inc

Country

US

Application N°

356235

Application Date

1940-09-10

Patent N°

2293622

Brevettato

1942-08-18

Priorità

1940-09-10

Brand

Wearever

Title

Mechanical pencil

Description

Matita meccanica

Riferimenti esterni

Informazioni

Brevetto per una matita meccanica. Riferimenti a n° US-2293621, n° US-2312928 e n° US-2293623.

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current23:12, 9 August 2013Thumbnail for version as of 23:12, 9 August 20131,159 × 1,704, 6 pages (330 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=John William Para |Assignee=David Kahn Inc |Country=US |ApplicationNum=356235 |ApplicationDate=1940-09-10 |PatentNum=2293622 |PatentDate=1942-08-18 |PriorityDate=1940-09-10 |Titolo=Mechanical pencil |Marca=Wearever |Descrizione=M...
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