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US91599A
Expired / Lapsed
US
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Improvement in low-water indicators
Assignee: —
•
Filing: —
•
Granted: 1869-06-22
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Expires: 1886-06-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:42
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/34; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3143; Y10T137/7722; Y10T137/7781; Y10T137/7832; Y10T137/7837; Y10T137/7904; Y10T137/7905
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) | 1872-06-21 | 1872-12-21 | 1873-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-06-21 | 1876-12-21 | 1877-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-06-21 | 1880-12-21 | 1881-06-22 | $7700.00 | Window Closed / Lapsed |