US2636129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar engine
Assignee: Individual
•
Filing: 1948-05-08
•
Granted: 1953-04-21
•
Expires: 1968-05-08
Abstract
No abstract record available.
Inventors
- 👤 Edward A Agnew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:30
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/046; F; F24; F24S; F24S10/00; F24S10/10; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S159/00; Y10S159/31; Y10S159/39; Y10S159/902; Y10S159/903; Y10S159/904; Y10S203/00; Y10S203/01; Y10S203/18; Y10S203/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1101000A
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US2372846A
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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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |