US593476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace-valve for hot-blast stoves
Assignee: —
•
Filing: —
•
Granted: 1897-11-09
•
Expires: 1914-11-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/09; B62D5/093; B62D5/097; F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1900-11-09 | 1901-05-11 | 1901-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-11-09 | 1905-05-11 | 1905-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-11-09 | 1909-05-11 | 1909-11-10 | $7700.00 | Window Closed / Lapsed |