| Patent: | US 5704790 |
| Titel: | Methods of playing games which enhance mathematical understanding |
| Datum: | 06.01.1998 |
| Ort: | (Cambridge, MA), Moses, Maisha V. |
| Land: | USA |
| Person: | Moses, Robert Parris |
| Firma: | |
| Links im Rechnerlexikon: | Lehrmittel |
| Schlagworte: | |
| Link zum Patentamt: (ohne Garantie) |  US5704790 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US5704790) (espacenet), US5704790 (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/FPTO/srchnum.htm&r=1&f=G&l=50&s1=5704790.PN.&OS=PN/5704790&RS=PN/5704790) (uspto) |
Aus der Patentschrift US5704790
- ok
- Patent Family: ( Patent:US5520542, Patent:US5704790 )