US304271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety-valve
Assignee: —
•
Filing: —
•
Granted: 1884-08-26
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Expires: 1901-08-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:55
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/12; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/065; F16K15/18; F16K15/182; F16K17/00; F16K17/02; F16K17/04; F16K17/06; F16K37/00; F16K37/0008; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/7876; Y10T137/7878; Y10T137/7904; Y10T137/7922; Y10T137/7924
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) | 1887-08-26 | 1888-02-25 | 1888-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-08-26 | 1892-02-25 | 1892-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-08-26 | 1896-02-25 | 1896-08-26 | $7700.00 | Window Closed / Lapsed |