US2594232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heater and heat exchanger
Assignee: Individual
•
Filing: 1947-09-16
•
Granted: 1952-04-22
•
Expires: 1967-09-16
Abstract
No abstract record available.
Inventors
- 👤 Clinton L Stockstill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:36
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/75; F24S10/755; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S126/00; Y10S126/906; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1258405A
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US1682404A
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US1889238A
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US1971242A
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US2274492A
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US2347957A
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US2268885A
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US2311579A
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US2277311A
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US2281299A
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FR891592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |