File:Patent-US-217888.pdf
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Dettagli
Inventor |
Duncan Mackinnon |
---|---|
Assignee |
Duncan Mackinnon |
Country |
US |
Application N° |
217888 |
Application Date |
1879-03-07 |
Patent N° |
217888 |
Brevettato |
1879-07-29 |
Priorità |
1879-03-07 |
Brand | |
Title |
Improvements in stylographic fountain-pens |
Description |
Penna a stilo |
Riferimenti esterni
Informazioni
Brevetto per una penna a stilo. Riferimento al precedente nº US-174965. Stampigliato sul corpo delle omonime penne MacKinnon (vedi File:1881-MacKinnon.jpg).
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current | 15:25, 26 December 2018 | 1,159 × 1,704, 3 pages (103 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Duncan Mackinnon |Assignee=Duncan Mackinnon |Country=US |ApplicationNum=217888 |ApplicationDate=1879-03-07 |PatentNum=217888 |PatentDate=1879-07-29 |PriorityDate=1879-03-07 |Titolo=Improvements in stylographic fountain-pens |Marc... |
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