US784005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for utilizing solar heat.
Assignee: SOLAR POWER Co
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Filing: 1902-05-21
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Granted: 1905-02-28
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Expires: 1922-05-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Ketchum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
F; F25; F25B; F25B27/00; F25B27/002; F25B27/005
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) | 1908-02-28 | 1908-08-29 | 1909-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-02-28 | 1912-08-29 | 1913-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-02-28 | 1916-08-29 | 1917-02-28 | $7700.00 | Window Closed / Lapsed |