Patent:US1514270
Patent: | US 1514270 |
Titel: | Means for Teaching Reading and the like |
Datum: | 04.11.1924 |
Ort: | |
Land: | USA |
Person: | J. L. Thomson |
Firma: | |
Links im Rechnerlexikon: | Lehrmittel |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US1514270 (espacenet), US1514270 (uspto) |
- DATUM: 04.11.1924
- TITEL: Means for teaching reading and the like