File:Patent-US-2452504.pdf

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Original file(1,159 × 1,704 pixels, file size: 280 KB, MIME type: application/pdf, 5 pages)
Inventor

Ivan D. Tefft

Assignee

The Parker Pen Company

Country

US

Application N°

607380

Application Date

1945-07-27

Patent N°

2452504

Brevettato

1948-10-26

Priorità

1945-07-27

Brand

Parker

Title

Writing instrument

Description

Penna a sfera

Riferimenti esterni

Informazioni

Brevetto per una penna a sfera. Riferimenti a nº US-538492, nº US-554189, nº US-600299, nº US-748383, nº US-987169, nº US-1179086, nº US-1373146, nº US-1808377, nº US-1935000, nº US-2106046, nº US-2107424, nº US-2390636 e nº US-2416896, ed inoltre nº DE-491057.

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Date/TimeThumbnailDimensionsUserComment
current16:00, 6 August 2012Thumbnail for version as of 16:00, 6 August 20121,159 × 1,704, 5 pages (280 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Ivan D. Tefft |Assignee=The Parker Pen Company |Country=US |ApplicationNum=607380 |ApplicationDate=1945-07-27 |PatentNum=2452504 |PatentDate=1948-10-26 |PriorityDate=1945-07-27 |Titolo=Writing instrument |Marca=Parker |Descrizion...
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