Patent:US2645854
Patent: | US 2645854 |
Titel: | Instrument for Drawing Ellipses and Related Figures |
Datum: | 21.07.1953 |
Ort: | |
Land: | USA |
Person: | Dibrell, J. W. (P) |
Firma: | |
Links im Rechnerlexikon: | Ellipsograph |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US2645854 (espacenet), US2645854 (uspto) |
- DATUM: 21.07.1953
- TITEL: Instrument for drawing ellipses and related figures