US2640937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protector
Assignee: Individual
•
Filing: 1951-07-05
•
Granted: 1953-06-02
•
Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J D Munday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:14
CPC Classifications
G; G21; G21F; G21F3/00; G21F3/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1609682A
Cited
US1611031A
Cited
US1648373A
Cited
US1636419A
Cited
AU2832330A
Cited
US1891492A
Cited
US2105319A
Cited
GB518141A
Cited
US2404225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |