Patent US519530A successfully refreshed from Google Patents.
US519530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke-consuming furnace
Assignee: —
•
Filing: —
•
Granted: 1894-05-08
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Expires: 1911-05-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/08; F23G5/14; F23G5/16
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) | 1897-05-07 | 1897-11-06 | 1898-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1901-05-08 | 1901-11-07 | 1902-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1905-05-08 | 1905-11-07 | 1906-05-09 | $7700.00 | Window Closed / Lapsed |