Patent:US4713009
Patent: | US 4713009 |
Titel: | Teaching apparatus and method for solving algebraic linear equations |
Datum: | 15.12.1987 |
Ort: | |
Land: | USA |
Person: | Borenson, Henry (1469 Neshaminy Valley Dr., Bensalem, PA |
Firma: | |
Links im Rechnerlexikon: | Lehrmittel |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US4713009 (espacenet), US4713009 (uspto) |
- DATUM: 15.12.1987
- TITEL: Teaching apparatus and method for solving algebraic linear equations
- PERSON: BORENSON HENRY US