Patent US171344A successfully refreshed from Google Patents.
US171344A
Expired / Lapsed
US
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Improvement in stop-cocks
Assignee: —
•
Filing: —
•
Granted: 1875-12-21
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Expires: 1892-12-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:46
CPC Classifications
F; F16; F16K; F16K37/00; F16K37/0066; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8326; Y10T137/8593; Y10T137/87917
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) | 1878-12-20 | 1879-06-21 | 1879-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-12-20 | 1883-06-21 | 1883-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-12-20 | 1887-06-21 | 1887-12-21 | $7700.00 | Window Closed / Lapsed |