File:Patent-US-1328215.pdf
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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 | |
Title |
Lever-filler for fountain-pens |
Description |
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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current | 01:14, 18 November 2013 | ![]() | 1,159 × 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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