File:Patent-US-2186870.pdf
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Inventor |
David Kahn |
---|---|
Assignee |
David Kahn Inc |
Country |
US |
Application N° |
231584 |
Application Date |
1938-09-24 |
Patent N° |
2186870 |
Brevettato |
1940-01-09 |
Priorità |
1938-09-24 |
Brand | |
Title |
Mechanical pencil |
Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica. Riferimenti a richiesta n° 733524 del 1934-07-02.
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current | 21:45, 9 August 2013 | ![]() | 1,159 × 1,704, 5 pages (308 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=David Kahn |Assignee=David Kahn Inc |Country=US |ApplicationNum=231584 |ApplicationDate=1938-09-24 |PatentNum=2186870 |PatentDate=1940-01-09 |PriorityDate=1938-09-24 |Titolo=Mechanical pencil |Marca=Wearever |Descrizione=Matita m... |
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Metadata
Fatti riguardanti Patent-US-2186870.pdf
Application date | settembre 24, 1938 + |
Application number | 231584 + |
Assigned to | David Kahn Inc + |
Invented by | David Kahn + |
Patent date | gennaio 9, 1940 + |
Patent description | Matita meccanica + |
Patent number | 2186870 + |
Patent title | Mechanical pencil + |
Patented by | Wearever + |
Patented in | US + |
Priority date | settembre 24, 1938 + |