US2608006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational toy
Assignee: Individual
•
Filing: 1951-01-18
•
Granted: 1952-08-26
•
Expires: 1971-01-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas N Mulvihill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:19
CPC Classifications
G; G09; G09B; G09B17/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US69482A
Cited
US305585A
Cited
US375095A
Cited
US407374A
Cited
US483138A
Cited
US613432A
Cited
US702615A
Cited
US731175A
Cited
US969429A
Cited
US1224742A
Cited
US1378893A
Cited
US1391986A
Cited
US1720499A
Cited
US2411717A
Cited
US2461926A
Cited
US2476194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |