US2705948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar water heater
Assignee: Individual
•
Filing: 1953-05-07
•
Granted: 1955-04-12
•
Expires: 1973-05-07
Abstract
No abstract record available.
Inventors
- 👤 Gunther H Rostock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:39
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/74; F24S10/742; F24S80/00; F24S80/30; F24S23/00; F24S23/70; F24S2023/83; F24S2023/831; F24S2023/84; F24S80/50; F24S2080/501; F24S2080/502; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S62/00; Y10S62/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |