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File:Patent-US-2293621.pdf

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Original file(1,159 × 1,704 pixels, file size: 387 KB, MIME type: application/pdf, 7 pages)
Inventor

John William Para, Julius Kahn

Assignee

David Kahn Inc

Country

US

Application N°

329958

Application Date

1940-04-16

Patent N°

2293621

Brevettato

1942-08-18

Priorità

1940-04-16

Brand

Wearever

Title

Mechanical pencil

Description

Matita meccanica

Riferimenti esterni

Informazioni

Brevetto per una matita meccanica. Riferimenti a nº US-2093919 e nº US-2203093.

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current23:03, 9 August 2013Thumbnail for version as of 23:03, 9 August 20131,159 × 1,704, 7 pages (387 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=John William Para, Julius Kahn |Assignee=David Kahn Inc |Country=US |ApplicationNum=329958 |ApplicationDate=1940-04-16 |PatentNum=2293621 |PatentDate=1942-08-18 |PriorityDate=1940-04-16 |Titolo=Mechanical pencil |Marca=Wearever |...
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