US344620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check-valve
Assignee: —
•
Filing: —
•
Granted: 1886-06-29
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Expires: 1903-06-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:34
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/021; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909
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) | 1889-06-28 | 1889-12-28 | 1890-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1893-06-28 | 1893-12-28 | 1894-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1897-06-28 | 1897-12-28 | 1898-06-29 | $7700.00 | Window Closed / Lapsed |