File:Patent-US-1978675.pdf
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Dettagli
Inventor |
Russel B. Kingman, Daniel J. Mayer |
---|---|
Assignee |
Russel B. Kingman |
Country |
US |
Application N° |
710450 |
Application Date |
1934-02-09 |
Patent N° |
1978675 |
Brevettato |
1934-10-30 |
Priorità |
1934-02-09 |
Brand | |
Title |
Soluble ink fountain pen |
Description |
Penna con inchiostro solubile |
Riferimenti esterni
Informazioni
Brevetto per una penna caricata con inchiostro solubile. Riferimenti a nº US-1912774.
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current | 01:59, 1 April 2021 | ![]() | 1,159 × 1,704, 5 pages (355 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Russel B. Kingman, Daniel J. Mayer |Assignee=Russel B. Kingman |Country=US |ApplicationNum=710450 |ApplicationDate=1934-02-09 |PatentNum=1978675 |PatentDate=1934-10-30 |PriorityDate=1934-02-09 |Titolo=Soluble ink fountain pen |... |
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