US138077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in combined stop-cocks, check-valves, and blow-offs
Assignee: —
•
Filing: —
•
Granted: 1873-04-22
•
Expires: 1890-04-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:33
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/202; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/87096; Y10T137/87121; Y10T137/87129; Y10T137/87137; Y10T137/877; Y10T137/87788; Y10T137/87901; Y10T137/87917; Y10T137/88054
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) | 1876-04-21 | 1876-10-21 | 1877-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-04-21 | 1880-10-21 | 1881-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-04-21 | 1884-10-21 | 1885-04-22 | $7700.00 | Window Closed / Lapsed |