US128663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in valve-cocks
Assignee: —
•
Filing: —
•
Granted: 1872-07-02
•
Expires: 1889-07-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:03
CPC Classifications
F; F16; F16K; F16K43/00; F16K43/005; F16K43/006; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87981; Y10T137/87997
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) | 1875-07-02 | 1876-01-01 | 1876-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1879-07-02 | 1880-01-01 | 1880-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1883-07-02 | 1884-01-01 | 1884-07-02 | $7700.00 | Window Closed / Lapsed |