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US167397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in stop-cocks
Assignee: —
•
Filing: —
•
Granted: 1875-09-07
•
Expires: 1892-09-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20
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) | 1878-09-06 | 1879-03-08 | 1879-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-09-06 | 1883-03-08 | 1883-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-09-06 | 1887-03-08 | 1887-09-07 | $7700.00 | Window Closed / Lapsed |