Patent US2909171A successfully refreshed from Google Patents.
US2909171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar cooker
Assignee: Individual
•
Filing: 1955-08-01
•
Granted: 1959-10-20
•
Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 George O G Lof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:29
CPC Classifications
F; F24; F24S; F24S23/00; F24S20/00; F24S20/30; F24S23/70; F24S23/71; Y; Y02; Y02B; Y02B40/00; Y02B40/18; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |