US553956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive valve for blast-furnaces
Assignee: —
•
Filing: —
•
Granted: 1896-02-04
•
Expires: 1913-02-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:35
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/035; F16K15/036; F16K15/038; F16K17/00; F16K17/36; F16K17/363; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7846; Y10T137/7876; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915
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) | 1899-02-03 | 1899-08-05 | 1900-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1903-02-04 | 1903-08-06 | 1904-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1907-02-04 | 1907-08-06 | 1908-02-05 | $7700.00 | Window Closed / Lapsed |