Patent US3245727A successfully refreshed from Google Patents.
US151027A
Expired / Lapsed
US
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Improvement in safe ty-valves
Assignee: —
•
Filing: —
•
Granted: 1874-05-19
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Expires: 1891-05-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:23
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0433; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932
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) | 1877-05-18 | 1877-11-17 | 1878-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-05-18 | 1881-11-17 | 1882-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-05-18 | 1885-11-17 | 1886-05-19 | $7700.00 | Window Closed / Lapsed |