File:Patent-GB-171154.pdf
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Dettagli
Inventor |
William P. De Witt |
---|---|
Assignee |
William Price De Witt |
Country |
GB |
Application N° |
23159/20 |
Application Date |
1920-08-06 |
Patent N° |
171154 |
Brevettato |
1921-11-07 |
Priorità |
1920-04-19 |
Brand | |
Title |
Improvements in pencil holders |
Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica. Stessa invenzione di nº US-1472962. Stessa invenzione di nº FR-526035. Stessa invenzione di nº DE-349147. Priorità dal brevetto statunitense.
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current | 23:00, 18 March 2014 | ![]() | 1,295 × 1,752, 6 pages (466 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William P. De Witt |Assignee=William Price De Witt |Country=GB |ApplicationNum=23159/20 |ApplicationDate=1920-08-06 |PatentNum=171154 |PatentDate=1921-11-07 |PriorityDate=1920-04-19 |Titolo=Improvements in pencil holders |Marca=D... |
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