US2351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in the construction of stop-cocks
Assignee: —
•
Filing: —
•
Granted: 1841-11-12
•
Expires: 1858-11-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:20
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/104
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) | 1844-11-11 | 1845-05-13 | 1845-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1848-11-11 | 1849-05-13 | 1849-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1852-11-11 | 1853-05-13 | 1853-11-12 | $7700.00 | Window Closed / Lapsed |