US2448648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar water heater
Assignee: CLINTON L STOCKSTILL
•
Filing: 1944-09-08
•
Granted: 1948-09-07
•
Expires: 1964-09-08
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Zideck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:05
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/50; F24S10/503; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2271437A
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US2311579A
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US2277311A
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US2358476A
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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) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |