Tone Trainer, Inc.
4Patents
0Active
4Granted
22Portfolio score
Filing activity: Apr 29, 1993 → Jul 13, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5439217A | Method and training device to assure sportsmen a proper grip with membrane switch | Human Necessities | 20 | Expired |
| US5322281A | Device to assure sportsmen a proper grip | Human Necessities | 7 | Expired |
| US5431395A | Device to assure sportsmen a proper grip | Human Necessities | 5 | Expired |
| US5439216A | Method and training device to assure sportsmen a proper grip with membrane switch | Human Necessities | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.