| Patent: | US 5876212 |
| Titel: | Apparatuses and kits for teaching mathematics |
| Datum: | 02.03.1999 |
| Ort: | |
| Land: | USA |
| Person: | Hartung, Paul G. (Greenwood Township, Columbia County, PA) |
| Firma: | |
| Links im Rechnerlexikon: | Lehrmittel |
| Schlagworte: | |
| Link zum Patentamt: (ohne Garantie) |  US5876212 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US5876212) (espacenet), US5876212 (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=5876212.PN.&OS=PN/5876212&RS=PN/5876212) (uspto) |
- DATUM: 02.03.1999
- TITEL: Apparatuses and kits for teaching mathematics
- PERSON: SAFE T PRODUCTS INC US
- Patent Family: ( Patent:CA2222286, Patent:DE19752610, Patent:FR2756402, Patent:GB2319881, Patent:GB9723971D, Patent:US5876212 )