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US265633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic regulator for furnaces
Assignee: —
•
Filing: —
•
Granted: 1882-10-10
•
Expires: 1899-10-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:26
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F23; F23N; F23N2223/00; F23N2223/08
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) | 1885-10-09 | 1886-04-10 | 1886-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1889-10-09 | 1890-04-10 | 1890-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1893-10-09 | 1894-04-10 | 1894-10-10 | $7700.00 | Window Closed / Lapsed |