US2952980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric device
Assignee: MIRA CORP
•
Filing: 1958-10-20
•
Granted: 1960-09-20
•
Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 William A Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:47
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; H; H10; H10N; H10N10/00; Y; Y10; Y10S; Y10S165/00; Y10S165/907
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2289152A
Cited
US2836641A
Cited
US2651700A
Cited
US2727632A
Cited
US2779172A
Cited
US2870610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |