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US58179A
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US
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Improvement in low-water detecters-for steam-generators
Assignee: —
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Filing: —
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Granted: 1866-09-18
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Expires: 1883-09-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:05
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686
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) | 1869-09-17 | 1870-03-19 | 1870-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1873-09-17 | 1874-03-19 | 1874-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1877-09-17 | 1878-03-19 | 1878-09-18 | $7700.00 | Window Closed / Lapsed |