Magic Dot Inc
Magic DotActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4034176A | Membrane switch apparatus | Expired / Lapsed | 1975-06-11 | 1977-07-05 | 8 | Details |
| US3995126A | Membrane keyboard apparatus | Expired / Lapsed | 1975-04-03 | 1976-11-30 | 11 | Details |
| US3988551A | Membrane keyboard apparatus having common apertured electro… | Expired / Lapsed | 1975-04-03 | 1976-10-26 | 10 | Details |
| US3887848A | Apparatus and material for protecting microelectronics from… | Expired / Lapsed | 1972-08-14 | 1975-06-03 | 83 | Details |
| US3879593A | Membrane switch | Expired / Lapsed | 1973-03-29 | 1975-04-22 | 23 | Details |
| US3766404A | Composite d.c. amplifier for use with a touch sensitive ele… | Expired / Lapsed | 1971-11-16 | 1973-10-16 | 14 | Details |
| US3737670A | Touch sensitive electronic switch | Expired / Lapsed | 1971-07-09 | 1973-06-05 | 18 | Details |