Patent US3705003A successfully refreshed from Google Patents.
US3705003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer controlled method for automatic visual field examination
Assignee: United States Department of Health and Human Services
•
Filing: 1970-07-13
•
Granted: 1972-12-05
•
Expires: 1990-07-13
Abstract
Abstract An illustrative embodiment of the present invention includes both method and apparatus for determining the threshold value of visual stimuli presented at selected locations in the visual field of a subject. Programmed automatic data processing equipment is utilized in a unique two way feedback system with an external apparatus to present the stimuli in an unpredictable fashion and a subject response device. The subject communicates with the data processing equipment via the subject responsr to dynamically alter the stimulus presentation regime while communicating a feedback to the subject of correct or incorrect preception of a given stimulus.
Inventors
- 👤 John R Lynn
- 👤 George W Tate Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:11
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/02; A61B3/024
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |