Patent US2824967A successfully refreshed from Google Patents.
US2824967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calutron
Assignee: Individual
•
Filing: 1944-10-31
•
Granted: 1958-02-25
•
Expires: 1964-10-31
Abstract
No abstract record available.
Inventors
- 👤 Martin D Kamen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:59
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/28; H01J49/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |