DataTrak, Inc.
Patent Applications and Registrations
Patent applications and USPTO patent grants for DataTrak, Inc..The latest application filed is for "electronic door lock apparatus, system and method".
- DataTrak, Inc. - Mountain View CA
| Patent | Date |
|---|---|
| Electronic door lock apparatus, system and method Grant 4,967,305 - Murrer , et al. October 30, 1 | 1990-10-30 |
| Electronic access card having key pads and coils and combination using the same Grant 4,864,115 - Imran , et al. September 5, 1 | 1989-09-05 |
| Electronic lock box, access card, system and method Grant 4,851,652 - Imran July 25, 1 | 1989-07-25 |
| Electronic secure entry system, apparatus and method Grant 4,808,993 - Clark February 28, 1 | 1989-02-28 |
| Electronic access card with visual display Grant 4,800,255 - Imran January 24, 1 | 1989-01-24 |
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