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US2915080A
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Control means for hot water systems
Assignee: Individual
•
Filing: 1958-04-01
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Granted: 1959-12-01
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Sterling W Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:11
CPC Classifications
F; F24; F24D; F24D17/00; F24D17/0078; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/6416; Y10T137/6497; Y10T137/8593; Y10T137/85954; Y10T137/85962
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US900599A
Cited
US2106822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |