US2919499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reading-training device
Assignee: Individual
•
Filing: 1954-06-21
•
Granted: 1960-01-05
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 William E Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:07
CPC Classifications
G; G09; G09B; G09B17/00; G09B17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1587886A
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US1587881A
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US1869790A
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US1879501A
Cited
US1988973A
Cited
US2098020A
Cited
US2265924A
Cited
US2305993A
Cited
US2662306A
Cited
US2662307A
Cited
US2632258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |