Patent US2133649A successfully refreshed from Google Patents.
US2133649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heater
Assignee: Individual
•
Filing: 1935-03-27
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Granted: 1938-10-18
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Expires: 1955-03-27
Abstract
No abstract record available.
Inventors
- 👤 Abbot Charles Greeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:05
CPC Classifications
F; F24; F24S; F24S30/00; F24S30/40; F24S10/00; F24S10/40; F24S10/45; F24S23/00; F24S2030/10; F24S2030/13; F24S2030/134; F24S2030/136; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y02E10/47; Y10; Y10S; Y10S203/00; Y10S203/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-10-17 | 1942-04-18 | 1942-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-17 | 1946-04-18 | 1946-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-17 | 1950-04-18 | 1950-10-18 | $7700.00 | Window Closed / Lapsed |