US157046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in rubber valves for pumps
Assignee: —
•
Filing: —
•
Granted: 1874-11-17
•
Expires: 1891-11-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:27
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/025; F16K15/026; F16K15/028; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7918
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) | 1877-11-16 | 1878-05-18 | 1878-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-11-16 | 1882-05-18 | 1882-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-11-16 | 1886-05-18 | 1886-11-17 | $7700.00 | Window Closed / Lapsed |