US2691831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reading rate training and comprehension measurement
Assignee: Individual
•
Filing: 1950-03-04
•
Granted: 1954-10-19
•
Expires: 1970-03-04
Abstract
No abstract record available.
Inventors
- 👤 Albert B Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:49
CPC Classifications
G; G09; G09B; G09B17/00; G09B17/04
Claims Analysis
Total Claims: 0
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US2496767A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |