Patent US449390A successfully refreshed from Google Patents.
US449390A
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US
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Valve-operating mechanism for flushing siphons
Assignee: —
•
Filing: —
•
Granted: 1891-03-31
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Expires: 1908-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:05
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/04; E03F5/0401; E03F5/0402; A; A01; A01K; A01K1/00; A01K1/01; A01K1/0103; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2802; Y10T137/2808; Y10T137/7287; Y10T137/7358; Y10T137/7407; Y10T137/741; Y10T137/7439; Y10T137/7475
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) | 1894-03-30 | 1894-09-29 | 1895-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-03-30 | 1898-09-29 | 1899-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-03-31 | 1902-09-30 | 1903-04-01 | $7700.00 | Window Closed / Lapsed |