File:Patent-US-1328215.pdf

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Original file(1,159 × 1,704 pixels, file size: 153 KB, MIME type: application/pdf, 3 pages)

Dettagli

Inventor

De Witt C. Van Valer

Assignee

De Witt C. Van Valer, Hobart W. Geyer

Country

US

Application N°

267812

Application Date

1918-12-21

Patent N°

1328215

Brevettato

1920-01-13

Priorità

1918-12-21

Brand

A. A. Waterman

Title

Lever-filler for fountain-pens

Description

Caricamento a levetta

Riferimenti esterni

Informazioni

Brevetto per una variante di caricamento a levetta. Attribuito alla A. A. Waterman in quanto Hobart W. Geyer ne era uno dei fondatori ed un altro brevetto di De Witt C. Van Valer è assegnato alla stessa ditta.

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current01:14, 18 November 2013Thumbnail for version as of 01:14, 18 November 20131,159 × 1,704, 3 pages (153 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=De Witt C. Van Valer |Assignee=De Witt C. Van Valer, Hobart W. Geyer |Country=US |ApplicationNum=267812 |ApplicationDate=1918-12-21 |PatentNum=1328215 |PatentDate=1920-01-13 |PriorityDate=1918-12-21 |Titolo=Lever-filler for fount...

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