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Patent US434796A successfully refreshed from Google Patents.
US434796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle-valve
Assignee: —
•
Filing: —
•
Granted: 1890-08-19
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Expires: 1907-08-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:03
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/202; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/8696; Y10T137/87096; Y10T137/87121
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) | 1893-08-18 | 1894-02-17 | 1894-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-08-18 | 1898-02-17 | 1898-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-08-19 | 1902-02-18 | 1902-08-20 | $7700.00 | Window Closed / Lapsed |