US2759112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube thermoelectric generator
Assignee: Individual
•
Filing: 1953-08-24
•
Granted: 1956-08-14
•
Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Caldwell Winston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:14
CPC Classifications
H; H01; H01J; H01J45/00; H01J1/00; H01J1/02; H01J1/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2510397A
Cited
USRE24879E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |